Reductive Carbocyclization of Homoallylic Alcohols to <i>syn</i>
-Cyclobutanes by a Boron-Catalyzed Dual Ring-Closing Pathway
作者:Chinmoy Kumar Hazra、Jinhoon Jeong、Hyunjoong Kim、Mu-Hyun Baik、Sehoon Park、Sukbok Chang
DOI:10.1002/anie.201713285
日期:2018.3.1
carbocyclization of homoallylic alcohols has been developed by using hydrosilanes as reducing reagents to provide a range of 1,2‐disubstituted arylcyclobutanes. The reaction proceeds in a cis‐selective manner with high efficiency under mild conditions. Mechanistic studies, including deuterium scrambling and Hammett studies, and DFT calculations, suggest a dual ring‐closing pathway.
通过使用氢硅烷作为还原剂,提供了一系列1,2-二取代的芳基环丁烷,已经开发出有机硼烷催化的均烯丙醇还原性碳环化反应。在温和条件下,反应以顺式选择方式高效进行。包括氘加扰和Hammett研究在内的机理研究以及DFT计算均提出了双闭环途径。