Tetrahedron

Reactions of 6-(dichloromethylene) cyclohexa-2, 4-dien-1-alkylimines with amines

K Wojciechowski, U Siedlecka, H Modrzejewska…

Index: Wojciechowski, Krzysztof; Siedlecka, Urszula; Modrzejewska, Helena; Kosinski, Szymon Tetrahedron, 2002 , vol. 58, # 38 p. 7583 - 7588

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Citation Number: 14

Abstract

Chlorination of 2, 1-benzisothiazoline 2, 2-dioxides (benzosultams) with hexachloroethane under phase-transfer catalysis condition in the presence of 50% aqueous NaOH and tetraalkylammonium salt gives 3, 3-dichlorobenzosultams in good yields. Thermal extrusion of SO2 from 3, 3-dichloropyridosultams generates dichloro derivatives of aza-ortho- xylylenes which do not enter [4+ 2] cycloaddition reactions, but add amines to form ...