Phototriggered Dehydration Condensation Using an Aminocyclopropenone
摘要:
A phototriggered dehydration condensation using an aminocyclopropenone has been developed. The UV irradiation of an, aminocyclopropenone generated a highly reactive ynamine in situ and the dehydration condensation of a carboxylic acid and an amine coexisting in the reaction solution smoothly proceeded to afford an amide. This reaction is completely controllable by the ON/OFF states of a UV lamp.
To improve the efficiency of the photocatalytic decarbonylation of cyclopropenones, the effects of substituents on cyclopropenone were explored. A benzothiophene-substituted aminocyclopropenone exhibited significantly improved decarbonylation efficiency to produce the corresponding ynamine, which worked as a potent dehydration condensation agent. The benzothiophene derivative was applicable to the
Phototriggered Ketone Formation from an Aminocyclopropenone and a Carboxylic Acid
作者:Kenji Mishiro、Yuki Yushima、Munetaka Kunishima
DOI:10.1021/acs.joc.8b02250
日期:2018.11.2
A novel phototriggered functionalization reaction of a carboxylic acid using an aminocyclopropenone has been developed. Irradiation of an aminocyclopropenone and carboxylic acid mixture generated ketones that possessed substituents from both the carboxylic acid and the aminocyclopropenone. This reaction occurred through two distinct phototriggered processes. Using this reaction, substituents in an