A general method for the reductive dechlorination of 4,4-dichlorocyclobutenones
作者:Rick L. Danheiser、Selvaraj Savariar
DOI:10.1016/s0040-4039(00)95496-0
日期:1987.1
Exposure of 4,4-dichlorocyclobutenones to the action of zinc dust in ethanol containing 5 equiv each of AcOH and TMEDA results in smooth reductive dechlorination producing simple cyclobutenones.
Collective Synthesis of Chiral Tetrasubstituted Cyclobutanes Enabled by Enantioconvergent Negishi Cross‐Coupling of Cyclobutenones
作者:Min Yan、Qiang Zhou、Ping Lu
DOI:10.1002/anie.202218008
日期:2023.2.6
Allylic substitution of readily available dichlorocyclobutenones and subsequent enantioconvergent Negishi coupling afforded 2,3,4-trisubstituted cyclobutenones. Further structural elaborations provided a group of 1,2,3,4-tetrasubstituted cyclobutanes with different stereochemical classes.