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5-Amino-3H-isobenzo­furan-1-one (5-amino­phthalide)

✍ Scribed by Yathirajan, Hemmige S. ;Nagaraj, Basavegowda ;Gaonkar, Santhosh L. ;Narasegowda, Rajenahally S. ;Prabhuswamy, Basappa ;Bolte, Michael


Publisher
International Union of Crystallography
Year
2005
Tongue
English
Weight
278 KB
Volume
61
Category
Article
ISSN
1600-5368

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## Abstract Acylation of 5‐amino‐3__H__‐1,3,4‐thiadiazolin‐2‐one (2) was undertaken selectively at either the 3‐NH position or at 5‐amino group depending on reaction conditions. The 3‐NH is highly acidic and acylation takes place with acid anhydrides at this position in high yields in the presence