In 2021 J ORG CHEM published article about DIELS-ALDER REACTION; ENANTIOSELECTIVE CONSTRUCTION; SUBSTITUTED CARBAZOLES; ASYMMETRIC-SYNTHESIS; EFFICIENT SYNTHESIS; 4+2 CYCLOADDITION; RELAY CATALYSIS; RAPID ACCESS; DERIVATIVES; TETRAHYDROCARBAZOLES in [Zhan, Shao-Cong; Fang, Ren-Jie; Sun, Jing; Yan, Chao-Guo] Yangzhou Univ, Coll Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China in 2021, Cited 96. The Name is 3-Nitrobenzaldehyde. Through research, I have a further understanding and discovery of 99-61-6. Safety of 3-Nitrobenzaldehyde
In the presence of copper sulfate, the three-component reaction of aromatic aldehydes, ethylindole-3-acetate and 4-arylidene-5-methyl-2-phenylpyrazol-3-ones, in refluxing toluene afforded spiro[carbazole-3,4′-pyrazoles] in good yields with high diastereoselectivity. More importantly, the similar CuSO4 promoted the four-component reaction of two molecular aromatic aldehydes with ethylindole-3-acetate and 5-methyl-2-phenyl-pyrazol-3-one resulted in 2,4-diarylspiro[carbazole-3,4′-pyrazoles] in satisfactory yields. Additionally, CuSO4 promoted the four-component reaction of two molecular aromatic aldehydes, ethylindole-3-acetate and 2-phenylthiazol-4-one, in refluxing toluene gave 2,4-diarylspiro[carbazole-3,4′-thiazoles] with diastereomeric ratios in the range of 3:1 to 20:1.
Safety of 3-Nitrobenzaldehyde. About 3-Nitrobenzaldehyde, If you have any questions, you can contact Zhan, SC; Fang, RJ; Sun, J; Yan, CG or concate me.
Reference:
Thiomorpholine – Wikipedia,
,Thiomorpholine | C4H9NS – PubChem