## Abstract magnified image The carbodiimides **2**, obtained from reactions of iminophosphorane **1** with isocyanates, reacted with hydrazine to give selectively 3โaminoโ2โarylaminobenzothieno[3,2โ__d__]pyrimidinโ4(3__H__)โones **4**. Reactions of **4** with triphenylphosphine, hexachloroethane,
โฆ LIBER โฆ
Synthesis of 3-Amino-1,2,4-benzothiadi- azine 1,1-Dioxides via a Tandem Aza-Wittig/Heterocumulene Annulation
โ Scribed by Blackburn, Christopher; Achab, Abe; Elder, Amy; Ghosh, Shomir; Guo, Jianping; Harriman, Geraldine; Jones, Matthew
- Book ID
- 120934377
- Publisher
- American Chemical Society
- Year
- 2005
- Tongue
- English
- Weight
- 257 KB
- Volume
- 70
- Category
- Article
- ISSN
- 0022-3263
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## Abstract magnified image Carbodiimide **2**, obtained from azaโWittig reaction of iminophosphorane **1** with aromaic isocyanate, reacted with ฮฑโamino ester in the presence of catalytic amount of sodium ethoxide to give selectively new tetracyclic benzothieno[3,2โd]โimidazo[1,2โa]pyrimidineโ2,5