Iminium carbonic acid derivative salts. X. Synthesis of N,S‐containing heterobicycles from N‐protected 2‐methylthio‐1,3‐thiazinium and 2‐methylthiothiazolium salts. Part 2. Reaction of N‐protected 2‐methylthio‐1,3‐thiazinium and 2‐methylthiothiazolium salts with vinylogous CH‐acidic compounds

• Published in: Journal of Heterocyclic Chemistry
• Main Authors: Hanefeld, Wolfgang, Naeeni, Mahmoud, Schlitzer, Martin
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1996
• Subjects: Ketene; Carbonic acid
• Online Access: http://dx.doi.org/10.1002/jhet.5570330640; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjhet.5570330640; https://onlinelibrary.wiley.com/doi/pdf/10.1002/jhet.5570330640

Abstract N ‐Boc‐protected 2‐methylthio‐1,3‐thiazinium 3 and 2‐methylthiothiazolium salts 4,7 obtained from the corresponding 1,3‐thiazine‐2‐thiones and thiazolidine‐2‐thiones by the action of methyl iodide or trimethyloxonium tetrafluoroborate were reacted with vinylogous CH‐acidic compounds forming...