## Abstract 4‐Allylthio‐2‐arylquinazolines **__4a–c__** undergo cyclization by action of bromine to furnish 5‐aryl‐3‐bromomethyl‐2,3‐dihydrothiazolo[3,2‐c]quinazolin‐4‐ium bromides **__5a–c__**. Compounds **__5a–c__** undergo ring opening by action of water under acid catalysis to afford the corres
Cationic and Mesoionic 1,3-Thiazolo[3,2-c]quinazoline Derivatives.
✍ Scribed by A. A. F. Wasfy
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 176 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
Two general methods are reported for the preparation of 1,2,4-triazolo[3,4-b][1,2,4]thiadiazolium salts 4 from 4-amino-2,4-dihydro-2-methyl-5-(methylthio)-3H-1,2,4-triazol-3thione (1). The first one involves the initial formation of arylidene derivatives 2 which undergo cyclization by the action of