An efficient total synthesis of decarestrictine J has been achieved using ring-closing metathesis and Yamaguchi esterification as key steps. The stereogenic centres were generated by means of iterative hydrolytic kinetic resolution (HKR) of racemic epoxides. (c) 2009 Elsevier Ltd. All rights reserved.
Hydrazone and Oxime Olefination via Ruthenium Alkylidenes
作者:Daniel J. Nasrallah、Troy E. Zehnder、Jacob R. Ludwig、Daniel C. Steigerwald、John J. Kiernicki、Nathaniel K. Szymczak、Corinna S. Schindler
DOI:10.1002/anie.202112101
日期:2022.5.23
Olefination of carbon–heteroatom double bonds is a powerful approach to access highly functionalized olefins. An approach is reported here that uses air-stable and commercially available rutheniumalkylidenes to promote C=N/olefin ring closure. The enabling strategy for this reaction is the use of hydrazones and oximes as readily accessible substrates that preferentially react with ruthenium alkylidenes