New cyclization of N-hydroxyiminoyl chlo
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Yeon Soo Lee; Kun Hoe Chung; Yong Hae Kim
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Article
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1999
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John Wiley and Sons
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English
โ 147 KB
๐ 2 views
## N-Hydroxyiminoyl chlorides reacted with N-alkyl ethynesulfonamides in the presence of triethylamine in CH 2 Cl 2 to afford the 4-alkyl-3-aryl-4,5dihydro-1,5,2,4-oxathiadiazepine-5,5-diones (3) as the major products together with N-alkyl-3-aryl-5-isoxazolesulfonamides (4).