Highly coordinate organosilicon compounds in synthesis: New entry to S,N-acetals by selective reduction of alkylthiomethyleniminium salts by use of trimethoxysilane and dilithium 2,3-butandiolate
Reduction of alkylthiomerthyleniminium iodides proceeds smoothly by use of trimethoxysilane and dilithium 2,3-butandiolate in tetrahydrofuran at 0°C to give the corresponding S,N-acetals selectively in high yield.
Condensation of Amines with S-Methyl Thiouronium Salts: Another Entry for the Synthesis of Amidines
作者:Toreshettahally R. Swaroop、Lokman Torun、Rahym Bakyyev、Kanchugarakoppal S. Rangappa
DOI:10.1055/a-2236-9522
日期:——
We present a condensation of primary aryl or alkyl amines with S-methyl thiouronium salts to obtain N,N,N′-trisubstituted amidines. High yields, short reaction times, and a fair substrate scope are the noteworthy features of this protocol. Surprisingly, the reaction of a thiouronium salt with 4-aminopyridine gave 1-(4-methoxybenzoyl)piperidine.
我们提出了伯芳基胺或烷基胺与S-甲基硫脲盐的缩合以获得N , N , N'-三取代脒。高产量、短反应时间和公平的底物范围是该协议的显着特点。令人惊奇的是,硫脲盐与4-氨基吡啶的反应得到1-(4-甲氧基苯甲酰基)哌啶。
777. Antituberculous compounds. Part X. Some reactions of quaternary compounds derived from NN-disubstituted thioamides