Tunable Approach to Diverse Phenethylamines via Reduction of 5-Aryloxazolidines with Triethylsilane
作者:Anastasia A. Smorodina、Evgeny M. Buev、Vladimir S. Moshkin、Vyacheslav Y. Sosnovskikh
DOI:10.1021/acs.joc.3c02264
日期:2024.2.16
trifluoroacetic acid yields three types of products: N,N-dimethylphenylethanolamines, N,N-dimethylphenethylamines, and tetrahydroisoquinolines, depending on the substituents in the aromatic ring and reaction conditions. Moreover, an additional step of oxazolidine hydrolysis or ring-opening with hydrogen cyanide allowed us to synthesize N-methyl- or N-methyl-N-(cyanomethyl)phenethylamines.
开发了一种从芳香醛快速合成各种β-苯乙胺的途径。最初,通过肌氨酸和多聚甲醛衍生的N-甲基偶氮甲碱叶立德的 [3 + 2] 环加成反应制备了多种 5-芳基恶唑烷。随后在三氟乙酸中用三乙基硅烷还原 5-芳基恶唑烷,产生三种类型的产物: N , N-二甲基苯基乙醇胺、 N , N-二甲基苯乙胺和四氢异喹啉,具体取决于芳环中的取代基和反应条件。此外,恶唑烷水解或用氰化氢开环的额外步骤使我们能够合成N-甲基-或N-甲基-N- (氰基甲基)苯乙胺。