Multicomponent formation route to a new class of oxygen-based 1,3-dipoles and the modular synthesis of furans
作者:Huseyin Erguven、Cuihan Zhou、Bruce A. Arndtsen
DOI:10.1039/d1sc04088j
日期:——
generated by the multicomponent reaction of aldehydes, acid chlorides and the phosphonite PhP(catechyl). These 1,3-dipoles are formally cyclic tautomers of simple Wittig-type ylides, where the angle strain and moderate nucleophilicity in the catechyl-phosphonite favor their cyclization and also direct 1,3-dipolarcycloaddition to afford single regioisomers of substituted products. Coupling the generation