<i>Vitreoscilla</i>hemoglobin: a natural carbene transfer catalyst for diastereo- and enantioselective synthesis of nitrile-substituted cyclopropanes
作者:Hanqing Xie、Fengxi Li、Yaning Xu、Chunyu Wang、Yuelin Xu、Junhao Wu、Zhengqiang Li、Zhi Wang、Lei Wang
DOI:10.1039/d3gc01905e
日期:——
biocatalysts for catalyzing carbene-mediated cyclopropanation, a synthetically valuable reaction not found in nature. In this study, we present a hemoglobin-catalyzed strategy for the highly stereoselective synthesis of nitrile-substituted cyclopropanes. This method offers efficiency and environmental friendliness by utilizing an asymmetric olefin cyclopropanation reaction catalyzed by wild-type Vitreoscilla hemoglobin
血红素蛋白最近已成为催化卡宾介导的环丙烷化反应的有吸引力的生物催化剂,这是一种在自然界中未发现的具有合成价值的反应。在这项研究中,我们提出了一种血红蛋白催化策略,用于高度立体选择性合成腈取代的环丙烷。该方法利用野生型透明颤菌血红蛋白在原位存在下催化的不对称烯烃环丙烷化反应,提供了高效且环境友好的方法。生成重氮乙腈。可以在水中合成各种腈取代的环丙烷,具有优异的立体选择性,实现高达 99.9% 的 de 和 ee 以及高达 3232 的高周转数。通过采用这种可持续的方法,不仅可以合成各种手性腈取代的环丙烷高效获得,同时也可以拓展血红蛋白在有机合成中的实际应用。
Highly Diastereo‐ and Enantioselective Synthesis of Nitrile‐Substituted Cyclopropanes by Myoglobin‐Mediated Carbene Transfer Catalysis
作者:Ajay L. Chandgude、Rudi Fasan
DOI:10.1002/anie.201810059
日期:2018.11.26
chemobiocatalytic strategy for the highly stereoselective synthesis of nitrile‐substituted cyclopropanes is reported. The present approach relies on an asymmetric olefin cyclopropanation reaction catalyzed by an engineered myoglobin in the presence of ex situ generated diazoacetonitrile within a compartmentalized reaction system. This method enabled the efficient transformation of a broad range of olefin substrates