Day: April 8, 2022

Product Details of 4531-54-8. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1-Methyl-4-nitro-1H-imidazol-5-amine, is researched, Molecular C4H6N4O2, CAS is 4531-54-8, about Nucleophilic substitution reactions of 1-methyl-4,5-dinitroimidazole with aqueous ammonia or sodium azide. Author is Lian, Peng-Bao; Guo, Xiao-Jie; Wang, Jian-Long; Chen, Li-Zhen; Shen, Fan-Fan.

In this work, 5-amino-1-methyl-4-nitroimidazole was synthesized by amination reaction of 1-methyl-4,5-dinitroimidazole with aqueous ammonia in 95% yield. Meanwhile, one of its isomers, 4-amino-1-methyl-5-nitroimidazole as byproduct was obtained from the filtrate. Furthermore, nucleophilic substitution reaction of 1-methyl-4,5-dinitroimidazole with sodium azide gave 5-azido-1-methyl-4-nitroimidazole in 98% yield. The three compounds were characterized by IR, 1H and 13C NMR spectra, m.ps., and elemental anal. The structure of 4-amino-1-methyl-5-nitroimidazole was further confirmed by single crystal X-ray diffraction. These reactions indicate that the nitro group at position 5 of 1-methyl-4,5-dinitroimidazole is quite unstable, as well as partial substitution of nitro group at position 4 also occurred in aqueous ammonia. Only one nitro group of the two is involved in nucleophilic substitution reaction in each case.

This literature about this compound(4531-54-8)Product Details of 4531-54-8has given us a lot of inspiration, and I hope that the research on this compound(1-Methyl-4-nitro-1H-imidazol-5-amine) can be further advanced. Maybe we can get more compounds in a similar way.

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Secondary to normal alkyl group rearrangements in octahedral iridium(III) complexes. 1. Monoalkyl derivatives, published in 1986, which mentions a compound: 616-14-8, Name is 1-Iodo-2-methylbutane, Molecular C5H11I, Category: thiomorpholine.

sec-Alkyliridium(III) complexes IrYIR(CO)L2 (R = sec-alkyl; Y = Cl, I; L = PMe3, PMe2Ph), formed by oxidative addition of sec-alkyl iodides to IrY(CO)L2, rearrange cleanly by a first-order process to the n-alkyl isomers on dissolution in CH2Cl2 containing protic solvents. The order of efficacy of these solvents in promoting alkyl group rearrangement is CF3CO2H >> CH3OH >> C2H5OH > CH3CO2H ∼ PrOH > (CH3)2CHOH, while in the more strongly coordinating medium of THF the order is H2O >> CH3OH. These orders correlate with the anion-solvating ability of the solvents and, together with the observed retardation by added iodide ion, suggest that the rate-determining step in the rearrangement is dissociation of iodide ion trans to the sec-alkyl group. Rapid, reversible β-hydride elimination in the resulting cation and stereospecific return of iodide ion trans to the resulting n-alkyl group complete the process. The rearrangement is promoted by increasing bulk, both of the alkyl group, up to a certain limit, and of the tertiary phosphine (PMe2Ph > PMe3). Treatment of IrClI{CH(CH3)2}(CO)(PMe2Ph)2 with AgBF4 in MeCN induces immediate alkyl group rearrangement to give the n-propyliridium(III) salt [IrClPr(CO)(NCMe)(PMe2Ph)2]BF4. Studies of analogous CD2CH3 compounds suggest that they, and presumably other n-alkyliridium(III) complexes, undergo reversible β-hydride elimination more slowly than the sec-alkyl complexes. The D labels in the isobutyl-d2 complex IrClI{CD2CH(CH3)2}(CO)(PMe3)2 scramble over all the alkyl C atoms when the compound is heated in CD2Cl2/CD3OD, indicating that a tert-butyliridium(III) species is accessible. Surprisingly, the complexes IrClI{CH2CH(CH3)CH2CH3}(CO)(PMe3)2 and IrClI{CH2CH2CH(CH3)2}(CO)(PMe3)2 do not interconvert under the same conditions, implying that a tert-pentylirdium(III) species cannot be formed. The results are compared with alkyl group rearrangements that occur in other transition-metal systems, especially those promoted by dissociation of Ph3P in (η-C5H5)FeR(CO)(PPh3).

This literature about this compound(616-14-8)Category: thiomorpholinehas given us a lot of inspiration, and I hope that the research on this compound(1-Iodo-2-methylbutane) can be further advanced. Maybe we can get more compounds in a similar way.

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-Iodo-2-methylbutane(SMILESS: CCC(CI)C,cas:616-14-8) is researched.Computed Properties of C4H6N4O2. The article 《Kinetics, products and mechanism of O(3P) atom reactions with alkyl iodides》 in relation to this compound, is published in NATO Science Series, IV: Earth and Environmental Sciences. Let’s take a look at the latest research on this compound (cas:616-14-8).

Alkyl halides are an important source of halogens in the atm. In the case of alkyl iodides, relative kinetic studies of their OH reactions in photoreactors are complicated by fast reactions with the O(3P) atoms generated by the photochem. OH radical sources. In the present study, the relative kinetic technique was applied in large and small photoreactors to measure rate coefficients for the reaction of O(3P) atoms with a series of alkyl iodides at room temperature and atm. pressure. The products formed in N2 were also investigated. Alkenes and HOI are the major products of the reactions and the alkene was quantified for the majority of the alkyl iodides studied.

This literature about this compound(616-14-8)Name: 1-Iodo-2-methylbutanehas given us a lot of inspiration, and I hope that the research on this compound(1-Iodo-2-methylbutane) can be further advanced. Maybe we can get more compounds in a similar way.

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Formation of 4(5)-aminoglyoxalines. I, published in 1930, which mentions a compound: 4531-54-8, mainly applied to , Computed Properties of C4H6N4O2.

The only evidence at present that 4(5)-aminoglyoxalines are true aromatic amines is the formation, after diazotization, of colored soln with aqueous β-C10H7ONa. Reduction of 4(5)-nitro-2-methyl- and 4(5)-nitroglyoxalines with Fe and H2O, FeSO4 and NaOH, Na2S or activated Al gave no basic material. Et glyoxaline-4(5)-carboxylate and N2H4.H2O, heated on the H2O bath for 30 min., give nearly quant. glyoxaline-4(5)-carboxyhydrazide, crystallizing with 1H2O, m. 213°, reduces NH4OH-AgNO3 slowly but not Fehling solution; picrate, yellow, m. 223° (decomposition), crystallizes from 85 parts boiling H2O. With HNO3 there results glyoxaline-4(5)-carboxyazide (I), decomposes explosively at 137°; heating with H2O does not give the urea; the green solution gives an amorphous picrate, chars 230°. Boiling I with absolute EtOH for 4 hrs. gives 42.2% of 4(5)-carbethoxyaminoglyoxaline, m. 180°; picrate, golden, decomposes 210°, crystallizes from 60 parts boiling H2O; nitrate (II), decomposes 143°. I and MeOH give 50% of the corresponding carbomethoxy derivative, m. 175°; picrate, decomposes 243°. Neither derivative could be hydrolyzed by acid or alkali. II and concentrated H2SO4 give 58% of 5(4)-nitro-4(5)-carbethoxyaminoglyoxaline, m. 234° (decomposition); this could not be converted by 10% Na2CO3 into the corresponding amine. 5-Chloro-4-nitro-1-methylglyoxaline and EtOH-NH3, heated 4 hrs. at 140°, give 63.7% of the 5-NH2 derivative, yellow, m. 303° (decomposition), crystallizes from 170 parts boiling H2O; it does not form an Ac derivative, a benzylidene derivative or a picrate; after treatment with HNO2, alk. C10H7ONa gives a greenish blue color and alk. m-C6H4(OH)2 a violet color. With 16% HCl, HNO2 is liberated and α-methylamino-α-hydroxyacetamide, pale brown, m. 140°, is formed.

This literature about this compound(4531-54-8)Computed Properties of C4H6N4O2has given us a lot of inspiration, and I hope that the research on this compound(1-Methyl-4-nitro-1H-imidazol-5-amine) can be further advanced. Maybe we can get more compounds in a similar way.

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-Iodo-2-methylbutane(SMILESS: CCC(CI)C,cas:616-14-8) is researched.Name: 1-Iodo-2-methylbutane. The article 《Preparation of standard mixtures of iodoalkanes by irradiation of iodine solutions in alkanes》 in relation to this compound, is published in Journal of Chromatography. Let’s take a look at the latest research on this compound (cas:616-14-8).

Mixtures of iodine with pentane, hexane, 3-methylpentane, 2,2-dimethylbutane, 2,3-dimethylbutane, heptane, 2,2-dimethylpentane, 2,4-dimethylpentane, 3,3-dimethylpentane, octane, 2,2,4-trimethylpentane, and 2,2,5-trimethylhexane were subjected to γ-irradiation and the gas chromatog. retention indexes of the resulting iodoalkanes determined

In addition to the literature in the link below, there is a lot of literature about this compound(1-Iodo-2-methylbutane)Name: 1-Iodo-2-methylbutane, illustrating the importance and wide applicability of this compound(616-14-8).

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 1-Iodo-2-methylbutane, is researched, Molecular C5H11I, CAS is 616-14-8, about Palladium-Catalyzed Arylation of Unactivated γ-Methylene C(sp3)-H and δ-C-H Bonds with an Oxazoline-Carboxylate Auxiliary.Name: 1-Iodo-2-methylbutane.

A palladium-catalyzed arylation of unactivated γ-methylene C(sp3)-H and remote δ-C-H bonds by using an oxazoline-carboxylate directing group has been developed. Arylation occurs with a broad substrate scope and high tolerance of functional groups (i.e., halogen, nitro, cyano, ether, trifluoromethyl, amine, and ester). The oxazoline-type auxiliary can be removed under acidic conditions.

In addition to the literature in the link below, there is a lot of literature about this compound(1-Iodo-2-methylbutane)Name: 1-Iodo-2-methylbutane, illustrating the importance and wide applicability of this compound(616-14-8).

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Electric Literature of C5H11I. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-Iodo-2-methylbutane, is researched, Molecular C5H11I, CAS is 616-14-8, about Gamma radiolysis of branched chain hydrocarbons. 2,3-Dimethylbutane. Author is Castello, Gianrico; Grandi, Francesco; Munari, Stelio.

The γ-radiolysis of liquid 2,3-dimethylbutane at room temperature was investigated under vacuum. Iodine was used as a free radical scavenger and the formed alkyl iodides were analyzed by gas chromatog. with electron capture detector. Irradiations of frozen 2,3-dimethylbutane at 77°K were also performed. The fragmentation products and many of those having a number of C atoms higher than the parent were identified and measured. The formation of the identified heavy products is mainly due to recombination of radicals, as demonstrated by the comparison between their yields and those of alkyl iodides.

In addition to the literature in the link below, there is a lot of literature about this compound(1-Iodo-2-methylbutane)Electric Literature of C5H11I, illustrating the importance and wide applicability of this compound(616-14-8).

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Application of 616-14-8. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1-Iodo-2-methylbutane, is researched, Molecular C5H11I, CAS is 616-14-8, about Kinetics, products and mechanism of O(3P) atom reactions with alkyl iodides. Author is Barnes, Ian.

Alkyl halides are an important source of halogens in the atm. In the case of alkyl iodides, relative kinetic studies of their OH reactions in photoreactors are complicated by fast reactions with the O(3P) atoms generated by the photochem. OH radical sources. In the present study, the relative kinetic technique was applied in large and small photoreactors to measure rate coefficients for the reaction of O(3P) atoms with a series of alkyl iodides at room temperature and atm. pressure. The products formed in N2 were also investigated. Alkenes and HOI are the major products of the reactions and the alkene was quantified for the majority of the alkyl iodides studied.

In addition to the literature in the link below, there is a lot of literature about this compound(1-Iodo-2-methylbutane)Application of 616-14-8, illustrating the importance and wide applicability of this compound(616-14-8).

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Development of a HPLC-DAD stability-indicating method and compatibility study of azathioprine and folic acid as a prerequisite for a monolayer fixed-dose combination, published in 2021, which mentions a compound: 4531-54-8, mainly applied to HPLC stability compatibility azathioprine folic acid monolayer dose combination, SDS of cas: 4531-54-8.

Adherence in chronic diseases is a major problem which can be combated by prescribing fixed-dose combinations in the therapy of the disease. Thus, a combination of azathioprine and folic acid in the treatment of inflammatory bowel disease is highly required, but prior to formulation development, chem. compatibility of the two drugs needs to be investigated. In this work, differential scanning calorimetry, isothermal stress testing, in vitro dissolution and forced degradation studies were utilized to investigate compatibility. Moreover, a stability-indicating HPLC-DAD method for the determination of parent drugs and five of their impurities was developed, validated and applied to the inhouse sample. Compatibility testing revealed no noteworthy interactions of the two drug substances. Furthermore, forced degradation showed no substantial differences between the degradation profiles of each active pharmaceutical ingredient, their mixture and the inhouse sample, further reinforcing the claim of compatibility. Lastly, the inhouse sample was analyzed: it was shown to conform to the requirements of relevant regulatory documents for all the investigated analytes, demonstrating the method’s viability for use in formulation and process development. Our results give way to the possibility of realization of said fixed-dose combination.

In addition to the literature in the link below, there is a lot of literature about this compound(1-Methyl-4-nitro-1H-imidazol-5-amine)SDS of cas: 4531-54-8, illustrating the importance and wide applicability of this compound(4531-54-8).

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Analysis of rotatory dispersions of configurationally related halides》. Authors are Levene, P. A.; Rothen, Alexandre; Marker, R. E..The article about the compound:1-Iodo-2-methylbutanecas:616-14-8,SMILESS:CCC(CI)C).Computed Properties of C5H11I. Through the article, more information about this compound (cas:616-14-8) is conveyed.

Rotatory dispersion curves of halides of the type HMeRC(CH2)nX (X = Cl, Br, I; R = alkyl group; n = 0, 1, 2 or 3) are analyzed in the visible and the ultraviolet regions. The 3 halogen atoms function similarly with respect to the character of this curve in compounds of identical structure. A periodicity in the sign of some of the partial contributions of the halogen atom occurs with increase in n. The course of the rotatory dispersion when n = 1 is anomalous. An attempt is made to apply results when n > 0 to the sign of rotation for compounds where n = 0. When X = COOH, CHO, CN, CHMe2, etc., no complete analogy exists between this group and the group where X is a halogen. [M]D25 maximum (homogeneous) is given for the 16 compounds where X = Br, n = 1, 2, 3, 4, and R = Et, Pr, Bu, pentyl, and for the compound HMeEtC(CH2)5Br. Absorption spectra are given for λ 2100-3300 for 5 iodides. Rotatory dispersion curves are given for the compounds HMeEtCCH2I, HMe(C6H13)CCH2I, HMeEtCCH2Br and HMeEtCCH2Cl. [M]D25 maximum, nD25, d425 (vacuum) and rotatory dispersions (numerical) are given for several other compounds in this series. Differences between the interpretation of the dispersions of the iodides given by the authors (C. A. 27, 951) and that given by Kuhn (C. A. 29, 7159.1) are due to substantial differences between their exptl. data.

In addition to the literature in the link below, there is a lot of literature about this compound(1-Iodo-2-methylbutane)Computed Properties of C5H11I, illustrating the importance and wide applicability of this compound(616-14-8).

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem