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ChemInform Abstract: Synthesis of 1,2,5-Thiadiazepine Derivatives by Ring Enlargement of 1, 2-Thiazetidin-3-one 1,1-Dioxides with 3-Amino-2H-azirines.

✍ Scribed by T. R. MIHOVA; A. LINDEN; H. HEIMGARTNER

Publisher: John Wiley and Sons
Year: 1997
Weight: 28 KB
Volume: 28
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199711135

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ChemInform Abstract: Ring-Enlargement an

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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

Ring-Enlargement and Ring-Opening Reacti

Ring-Enlargement and Ring-Opening Reactions of 1,2-Thiazetidin-3-one 1,1-Dioxides with Ammonia and Primary Amines as Nucleophiles

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The N-benzyl-and N-alkyl-substituted 1,2-thiazetidin-3-one 1,1-dioxides 1b ± d reacted readily with NH 3 and primary amines via ring opening. The reaction with NH 3 proceeded at À 788 3 room temperature yielding ring-opened adducts via nucleophilic attack of NH 3 at the sulfonyl group, whereas the r

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