Enantioselective Phosphine-Catalyzed Trimerization of γ-Aryl-3-butynoates via Isomerization/[3 + 2] Cyclization/Michael Addition Cascade
作者:Yujia Gao、Juan Zhang、Wenyu Shan、Weihong Fei、Jinzhong Yao、Weijun Yao
DOI:10.1021/acs.orglett.1c02197
日期:2021.8.20
We disclose an l-isoleucine-derived amide phosphine-catalyzed trimerization of γ-aryl-3-butynoates, which undergo an isomerization to allenoate, [3 + 2] cyclization, and Michaeladdition cascade. Exocyclopentene derivatives bearing an all-carbon quaternary stereocenter were constructed stereospecifically and enantioselectively. A wide variety of γ-aryl-3-butynoates could be employed to deliver optically
Newman; Wotiz, Journal of the American Chemical Society, 1949, vol. 71, p. 1294
作者:Newman、Wotiz
DOI:——
日期:——
Chemistry of polyenic and polyacetylenic compounds
作者:B. P. Gusev、L. A. Tsurgozen、V. F. Kucherov
DOI:10.1007/bf00849332
日期:1971.1
Switchable multipath cascade cyclization to synthesize bicyclic lactams and succinimides <i>via</i> chemodivergent reaction
作者:Yimei Song、Chaofei Wu、Jinhai Zhang、Wenhai Zhang、Xin Qin、Yixiao Yang、Guowei Kang、Jun Jiang、Hongxin Liu
DOI:10.1039/d2cc06841a
日期:——
Herein, a novel switchable multipath cascade cyclizationvia chemodivergent reaction between readily available ketoamides and deconjugated butenolides was developed to efficiently synthesize γ-lactone fused γ-lactams and succinimide fused hemiketals. The Aldol/aza-Michael reaction and Aldol/imidation/hemiketalization reaction were enabled by catalytic amounts of two bases, namely tetramethyl guanidine