The ring opening of 3,4-dichloro-1,2,5-thiadiazole with metal amides. A new synthesis of 3,4-disubstituted-1,2,5-thiadiazoles
作者:Alain Merschaert、Pascal Boquel、Hugo Gorissen、Jean-Pierre Van Hoeck、Alfio Borghese、Luc Antoine、Vincent Mancuso、Anne Mockel、Michel Vanmarsenille
DOI:10.1016/j.tetlet.2006.09.102
日期:2006.11
We have developed a new synthesis of 3,4-disubstituted-1,2,5-thiadiazoles. The methodology is based on the ring opening of readily available 3,4-dichloro-1,2,5-thiadiazole with metal amides to afford a stable synthon, which is then transformed into the 3,4-disubstituted-1,2,5-thiadiazole derivatives via two consecutive reactions with O-, S-, N- or C-nucleophiles.
我们开发了3,4-二取代-1,2,5-噻二唑的新合成方法。该方法基于容易获得的3,4-二氯-1,2,5-噻二唑与金属酰胺的开环以提供稳定的合成子,然后将其转化为3,4-二取代的1,2,5 -噻二唑衍生物通过与O-,S-,N-或C-亲核试剂的两个连续反应而形成。