An N-Heterocyclic Carbene-Catalyzed Oxidative γ-Aminoalkylation of Saturated Carboxylic Acids through in Situ Activation Strategy: Access to δ-Lactam
作者:Yonglei Que、Yuanwei Xie、Tuanjie Li、Chenxia Yu、Shujiang Tu、Changsheng Yao
DOI:10.1021/acs.orglett.5b03223
日期:2015.12.18
An N-Heterocyclic Carbene (NHC)-catalyzed oxidative formal [4 + 2] annulation of acylhydrazones with saturated carboxylic acids bearing γ-H to assemble δ-lactams featuring a chiral carbon stereogenic center was developed through an in situ activation strategy. The ready availability of the starting materials, excellent enantioselectivity, facile assembly, high yields, and potential biological significance
N-杂环卡宾(NHC)催化酰基hydr与具有γ-H的饱和羧酸的氧化形式[4 + 2]环合反应,通过原位活化策略开发了具有手性碳立体异构中心的δ-内酰胺。起始材料的随时可用,出色的对映选择性,易组装,高收率以及最终产品的潜在生物学意义,使得该方案成为构建吡啶酮支架的有吸引力的替代方案。