Oxidative cleavage of the C–C bond of 3,6-dialkylcyclohexane-1,2-diones by cell suspension cultures of Marchantia polymorpha
摘要:
Biotransformation of 3,6-dialkylcyclohexane-1,2-diones by cell suspension cultures of Marchantia polymorpha involves regioselective oxidative cleavage of the C-C bond to give the corresponding oxocarboxylic acids shortened by one carbon unit. In the case of cyclohexane-1,2-dione, adipic acid was obtained. (C) 2002 Elsevier Science Ltd. All rights, reserved.
Brønsted Acid-Catalyzed Formal [2 + 2 + 1] Annulation for the Modular Synthesis of Tetrahydroindoles and Tetrahydrocyclopenta[<i>b</i>]pyrroles
作者:Joshua A. Malone、Courtney E. Toussel、Frank R. Fronczek、Rendy Kartika
DOI:10.1021/acs.orglett.9b01032
日期:2019.5.17
An expedient synthesis of tetrahydroindoles and tetrahydrocyclopenta[ b]pyrroles, highlighted by Brønsted acid catalyzed formal [2 + 2 + 1] annulation reaction, is reported. Using three readily accessible reaction components, i.e., an electrophilic species in silyloxyallyl cations and two distinct nucleophiles in silylenol ethers and amines, our chemistry enables the assembly and functionalization