Day: March 28, 2022

Mori, Kenji; Yang, Chang Yeol published the article 《Pheromone synthesis. Part 259: Synthesis of seven methyl-branched hydrocarbons as the pheromone candidates for female Korean apricot wasp, Eurytoma maslovskii》. Keywords: pheromone synthesis Korean apricot wasp branched hydrocarbon.They researched the compound: 1-Iodo-2-methylbutane( cas:616-14-8 ).Name: 1-Iodo-2-methylbutane. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:616-14-8) here.

Seven new methyl-branched hydrocarbons were synthesized, which were the pheromone candidates of the female Korean apricot wasp (Eurytoma maslovskii). They are (Z)-15-methyl-7-nonacosene (I), (Z)-17-methyl-7-hentriacontene (II), 3,7-dimethylheptacosane (III), 8,12-dimethyltriacontane (IV), 8,18-dimethyltriacontane (V), 3,7,11-trimethylnonacosane (VI), and 3,7,17-trimethylnonacosane (VII). All of them were synthesized as stereoisomeric mixtures, employing short and simple routes. Hydrocarbon VII was synthesized via 4,8-dimethyldecanal (tribolure), the red flour beetle pheromone. The hydrocarbons I, II, III and VI were identified by GC-MS anal. as the components (with unknown stereochem.) of the female-specific secretion of E. maslovskii.

Here is a brief introduction to this compound(616-14-8)Name: 1-Iodo-2-methylbutane, if you want to know about other compounds related to this compound(616-14-8), you can read my other articles.

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-Methyl-4-nitro-1H-imidazol-5-amine( cas:4531-54-8 ) is researched.COA of Formula: C4H6N4O2.Lian, Peng-Bao; Guo, Xiao-Jie; Wang, Jian-Long; Chen, Li-Zhen; Shen, Fan-Fan published the article 《Nucleophilic substitution reactions of 1-methyl-4,5-dinitroimidazole with aqueous ammonia or sodium azide》 about this compound( cas:4531-54-8 ) in Chemistry of Heterocyclic Compounds (New York, NY, United States). Keywords: nucleophilic substitution reaction methyldinitroimidazole aqueous ammonia sodium azide. Let’s learn more about this compound (cas:4531-54-8).

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.

Here is a brief introduction to this compound(4531-54-8)COA of Formula: C4H6N4O2, if you want to know about other compounds related to this compound(4531-54-8), you can read my other articles.

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 《The infrared spectrum of the formate ion》. Authors are Schutte, C. J. H.; Buijs, K..The article about the compound:1-Iodo-2-methylbutanecas:616-14-8,SMILESS:CCC(CI)C).Recommanded Product: 1-Iodo-2-methylbutane. Through the article, more information about this compound (cas:616-14-8) is conveyed.

The infrared spectra of anhydrous Ca(HCO2)2, Sr(HCO2)2, Ba(HCO2)2, and Pb(HCO2)2 show clearly the doubling of the fundamental bands of the formate ion owing to the existence of non-equivalent ions in the lattice. A new tetragonal phase of Ca(HCO2)2 precipitate when an organic solvent is added to an aqueous solution of Ca(HCO2)2. The new β phase belongs to space group D44-P412121, α = 9.46 A., c = 6.77 A., with 4 mols. per unit cell. The absorption bands for the β phase are single, in accordance with the crystallographic symmetry.

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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 Optical rotations of configurationally related azides, published in 1936, which mentions a compound: 616-14-8, mainly applied to , Application of 616-14-8.

Substances of the type MeCH[(CH2)n1X][(CH2)n2R], where n1 or n2 = 0 or an integer, X = a functional group and R = a normal alkyl, Ph or C6Hn group, can be classified into 2 categories, viz., those, typified by X = CHO, in which the configuration of the 1st members having n1 = 0 can be correlated by classical methods to those having n1 > 0, and those, typified by X = halogen, in which such correlation cannot be accomplished by classical methods. For the purpose of solving the latter problem the azides were chosen over the halides, inasmuch as they can be converted into the corresponding amines. The amines, while belonging to the 2nd category, can be correlated among themselves by a sufficiently reliable though nonclassical argument which will be reported later. The secondary azides were prepared by the action of NaN3 on the iodides and the amines by reduction of the azides with PtO2. The rotatory phenomena observed in the series of azides and halides were compared with those in the series of aldehydes and were found to be dissimilar in both series. Hence a comparison of these phenomena cannot be used for the correlation of the members of the series of halides and azides having n1 = 0 with those having n1 > 0. The following compounds were prepared: l-2-iodobutane, b. 111-18°, [M]D25 -24.1°, from the alc. and anhydrous HI in a bomb tube at room temperature for 2 days; d-2-azidobutane, b500 85°, d425 0.8619, nD25 1.4122, [M]D25 15.9°; d-2-aminobutane, [M]D25, 0.66° (in H2O), (HCl salt, [M]5875.625 -0.44° (in H2O)); l-2-iodoöctane, b1 52°, nD25 1.4863, d425 1.3158, [M]D25 -80.0°; d-2-azidoöctane, b9 68°, nD25 1.4332, d425 0.8555, [M]D25 43.4°, 42.5° (in heptane (I)); d-2-aminoöctane, b9 48°, nD25 1.4220, [M]D25 5.41°, (HCl salt, [M]D25 -6.44° (in H2O)); d-1-iodo-2-methylbutane, b. 145-6°, nD25 1.4950, [M]D25 8.28°, maximum [M]D25 11.1°; d-1-azido-2-methylbutane, b138 72°, nD25 1.4240, d425 0.8770, [M]D25 8.61°, maximum [M]D25 11.6°; l-1-amino-2-methylbutane, b12 40-5°, [M]5875.625 -0.21° (in H2O); l-1-azido-2-methylhexane, b15 59-60°, [α]D25 -0.30°; d-1-iodo-2-methylnonane, b4 86°, d425 1.254, [M]D25 2.54°; l-1-azido-2-methylnonane, b10 98-102°, d425 0.8658, nD25 1.4430, [M]D25 -0.74°; l-1-iodo-3-methylpentane, b12 54°, d425 1.3934, nD25 1.4866, [M]D25 -16.1°, maximum [M]D25 -43.9°; l-1-azido-3-methylpentane, b. 145-8°, nD25 1.4300, [M]D25 -9.63°, maximum [M]5875.625 -26.3° (in I); d-1-iodo-4-methylhexane, b13 74-5°, b103 124-6°, nD25 1.4852, d425 1.3579, [M]D25 8.20°, maximum [M]D25 26.2°; d-1-azido-4-methylhexane, b418 157°, d425 0.8636, nD25 1.4323, [M]5875.625 5.41°, maximum [M]5875.625 17.3° (in I.). All values for [M] are for the homogenous substance unless otherwise stated.

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Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem

Application In Synthesis of 1-Iodo-2-methylbutane. 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 Palladium-Catalyzed Arylation of Unactivated γ-Methylene C(sp3)-H and δ-C-H Bonds with an Oxazoline-Carboxylate Auxiliary. Author is Ling, Peng-Xiang; Fang, Sheng-Long; Yin, Xue-Song; Chen, Kai; Sun, Bo-Zheng; Shi, Bing-Feng.

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.

Here is a brief introduction to this compound(616-14-8)Application In Synthesis of 1-Iodo-2-methylbutane, if you want to know about other compounds related to this compound(616-14-8), you can read my other articles.

Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem