The reaction of Meldrum's acid, pyrrolide, and allyl carbonates allows a multicomponent decarboxylative coupling to form allylated acyl pyrroles. This strategy is made possible by the in situ formation of β-oxo carboxylates from Meldrum's acid. Subsequent decarboxylative enolate formation and electrophilic allylation complete the reaction. Addition of benzylidene malononitriles as good Michael acceptors allow a 4-component interceptive decarboxylative allylation.
梅氏酸、
吡咯烷和烯
丙基碳酸酯的反应可以通过多组分脱羧偶联生成烯丙基酰基
吡咯。这种策略是通过原位形成梅氏酸的β-氧代
羧酸盐而实现的。随后形成的脱羧烯醇和亲电烯丙基化完成了反应。加入亚苄基
丙二腈作为良好的迈克尔受体,可以进行 4 组分互作脱羧烯丙基化反应。