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An efficient synthesis of cis‐1,2‐dicyanoalkenes by the reaction of 1,1‐bis(benzenesulfonyl)alkenes with KCN was developed. This reaction was conducted in the presence of tetrabutylammonium bromide and NH4Cl/K3PO4 under phase‐transfer conditions. A series of cis‐1,2‐dicyanoalkenes were obtained in good to high yields. Further transformation of the obtained product allows for access to imide and dicarboxylic...
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