Cyclisation of benzils

…, FJ Swinbourne, OO Shode, J Lynch

文献索引：Cremlyn; Swinbourne; Shode; Lynch Journal of Heterocyclic Chemistry, 1987 , vol. 24, # 1 p. 117 - 121

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被引用次数: 23

摘要

Abstract Treatment of several substituted benzils [3, 3′-and 4, 4′-dimethyl-; 2, 2′-, 3, 3′- and 4, 4′-dichloro-; 3, 3′-dibromo-; 4-(N, N-dimethylamino)-] with an excess of chlorosulfonic acid gave the corresponding 3-chloro-2-phenylbenzofuran disulfonyl dichlorides. Disubstitution was confirmed by microanalytical and spectral data for the corresponding bis (N, N-dimethylaminsulfonamides). The positions of electrophilic ...