Laccase enzyme catalysed efficient synthesis of 3-Substituted-1,2,4-triazoto(4,3-b)(4,1,2)benzothiadiazine-8-ones
✍ Scribed by Uday T. Bhalerao; Chivukula Muralikrishna; Bonala Radha Rani
- Book ID
- 104204885
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- French
- Weight
- 330 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4020
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A simple method for the preparation of 4,4-disubstituted-3,4-dihydro-1H-2,1,3-benzothiadiazine 2,2dioxides is described. Treatment of N-sulfonyl ketimines 2 and 3 with different carbon nucleophiles afforded the corresponding of 4,4-disubstituted-3,4-dihydro-1H-2,1,3-benzothiadiazine 2,2-dioxides 1 i
## Abstract A new method for the preparation of 4‐substituted 3,4‐dihydro‐1__H__‐2,1,3‐benzothiadiazine 2,2‐dioxides is described. Treatment of __t__‐butyl __N__‐phenylsulfamoylcarbamate derivatives (**1**) with different aldehydes afforded the corresponding intramolecular cyclized products **2** u