A highly efficient synthesis of vinylsulfones was achieved via decarboxylative cross-coupling reaction of cinnamic acids with aromatic sulfinic acid sodium salts catalyzed by Pd(OAc)2 and dppb in the presence of Ag2CO3. The reaction was found to furnish various vinylsulfones in good yields instead of the expected desulfitative product stilbenes. Mechanistic investigation also suggested that the decarboxylation
在 Ag2CO3 存在下,通过 Pd(OAc)2 和 dppb 催化
肉桂酸与芳香亚
磺酸钠盐的脱羧交叉偶联反应,实现了
乙烯基砜的高效合成。发现该反应以良好的收率提供各种
乙烯基砜,而不是预期的脱
硫产物
二苯乙烯。机理研究还表明,脱羧可能发生在
金属转移步骤之后。图形摘要