Enantioselective Conjugate Hydrocyanation of α,β-Unsaturated <i>N</i>-Acylpyrroles Catalyzed by Chiral Lithium(I) Phosphoryl Phenoxide
作者:Manabu Hatano、Katsuya Yamakawa、Kazuaki Ishihara
DOI:10.1021/acscatal.7b02551
日期:2017.10.6
Enantioselective conjugate hydrocyanation of α,β-unsaturated N-acylpyrroles with the combined use of Me3SiCN, LiCN, and HCN has been developed in the presence of a chiral lithium(I) phosphoryl phenoxide catalyst. This reaction is useful for a variety of N-acylpyrroles, including previously unreported substrates, such as heteroaryl and halogen-substituted N-cinnamoylpyrroles. A gram-scale reaction and
在手性锂(I)磷酰基苯酚催化剂的存在下,开发了结合使用Me 3 SiCN,LiCN和HCN的α,β-不饱和N-酰基吡咯的对映选择性共轭氢氰化方法。该反应可用于多种N-酰基吡咯,包括先前未报告的底物,例如杂芳基和卤素取代的N-肉桂酰基吡咯。克级反应和随后的向(R)-琥珀酸酯,(S)-对锥酸和(R)-baclofen的转化证明了光学合成β-取代的γ-氨基丁酸(GABA)的实用合成方法。