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Cyclization reactions 31. Synthesis of 2-methyl-2-halomethylbenzimidazo [2,1-b]thiazolidinium salts and their conversions to N-(2-methyl-2,3-epithio-propyl)benzothiazol-2-ones

โœ Scribed by N. I. Korotkikh; G. F. Raenko; A. F. Aslanov; O. P. Shvaika


Book ID
105103764
Publisher
Springer US
Year
1994
Tongue
English
Weight
380 KB
Volume
30
Category
Article
ISSN
0009-3122

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## Abstract magnified image [2โ€Alkylthioโ€6โ€methylโ€4โ€oxopyrimidinโ€3(4__H__)โ€yl]acetonitriles (**3โ€5**) treated with sodium methoxide in methanol followed by ammonium chloride were cyclized to 2โ€iminoโ€7โ€methylโ€2,3โ€dihydroimidazo[1,2โ€__a__]โ€pyrimidinโ€5(1__H__)โ€ones (**6โ€8**). Under acid or baseโ€catal