Poly(N-Bromobenzene-1,3-disulfonamide) and N,N,N ',N '-Tetrabromobenzene-1,3-disulfonamide as a Mild and Efficient Catalyst for Chemoselective Thioacetalization of Carbonyl Functions and Transthioacetalization Reactions

[摘要]：Poly(N-bromobenzene-1,3-disulfonamide) and N,N,N',N'-tetrabromobenzene-1,3-disulfonamide are effective catalysts for chemoselective dithioacetalization of aldehydes in the presence of ketones under neutral conditions.

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