Efficient base-free asymmetric one-pot synthesis of spiro[indoline-3,3′-pyrrolizin]-2-one derivatives catalyzed by chiral organocatalyst
作者:Chinnadurai Chithiraikumar、Kottala Vijaya Ponmuthu、Muniyasamy Harikrishnan、Nelson Malini、Murugesan Sepperumal、Ayyanar Siva
DOI:10.1007/s11164-020-04303-8
日期:2021.3
3-dipolar cycloaddition reaction has been performed under organocatalytic conditions with high enantioselectivity by the utilization of bipyridine-based chiral quaternary ammonium bromide as an organocatalyst. Here, the reaction of 1,3-dipolar cycloaddition of azomethine ylide generated in situ from the decarboxylative condensation of α-amino acids and non-enolizable 1,2-diketones to the above dipolarophiles
通过使用基于联吡啶的手性季铵溴化铵作为有机催化剂,在高对映选择性的有机催化条件下进行了1,3-偶极环加成反应。这里,生成的偶氮甲碱内鎓盐的1,3-偶极环加成的反应在原位从的脱羧缩合α -氨基酸和非烯醇化的1,2-二酮上述dipolarophiles发生。