A method for controlling weeds preferably in the crops of useful plants by using a 5-imidazolecarboxylic acid derivative; herbicidal compositions containing the same; novel 5-imidazolecarboxylic acid derivatives.
Enantioselective Synthesis of Indanes with a Quaternary Stereocenter via Diastereoselective C(sp<sup>3</sup>)–H Functionalization
作者:Jun Chen、Zhan Shi、Ping Lu
DOI:10.1021/acs.orglett.1c02513
日期:2021.10.1
A practical synthesis of enantioenriched indane derivatives with quaternarystereocenters was developed via sequential enantioselective reduction and C–H functionalization. Good to excellent enantioselectivity could be achieved by either the CuH-catalyzed asymmetric reduction or the Corey–Bakshi–Shibata (CBS) reduction of indanone derivatives. The subsequent diastereospecific and regioselective rhodium-catalyzed