Gold vs Light: Chemodivergent Reactivity of Diazoesters toward 2<i>H</i>-Azirine-2-carboxylic Acids
作者:Gleb D. Titov、Grigory I. Antonychev、Mikhail S. Novikov、Alexander F. Khlebnikov、Elizaveta V. Rogacheva、Liudmila A. Kraeva、Nikolai V. Rostovskii
DOI:10.1021/acs.orglett.3c00823
日期:2023.4.21
reaction is N-selective and produces 1,3-oxazin-6-ones, whereas a blue light activation leads to O–H insertion products, azirine-2-carboxylic esters. The observed chemodivergence is explained by the metal-bound and metal-free carbenes exhibiting different electronic properties in these reactions. In addition, a high antibacterial potential of the 1,3-oxazin-6-ones synthesized is shown.
Reaction of dimethyl acetylenedicarboxylate with 3,4-disubstituted isoxazolin-5-ones. A new synthesis of 1,3-oxazin-6-ones and 2,3-dihydro-1,3-oxazin-6-ones
作者:Egle M. Beccalli、Alessandro Marchesini、Maria L. Gelmi、Tullio Pilati