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Regioselective synthesis of new 2,5,6-trisubstituted 5,6-dihydro-2H-pyrazolo[3,4-d]thiazoles from 5-dimethylaminoethylene-thaozolidin-4-thiones

✍ Scribed by Gautam, Poonam; Gautam, Deepika; Chaudhary, R.P.

Book ID: 127341193
Publisher: Taylor and Francis Group
Year: 2014
Tongue: English
Weight: 568 KB
Volume: 35
Category: Article
ISSN: 1741-5993
DOI: 10.1080/17415993.2014.944912

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## Abstract magnified image A novel approach to regioselective synthesis of new 5‐amino‐6‐arylamino‐1__H__‐pyrazolo[3,4‐__d__]pyrimidin‐4(5__H__)‐one **5** derivatives __via__ a tandem aza‐wittig and annulation reaction of iminophosphorance **2**, aromatic isocyanates and hydrazine in 69.6–94.7% i