RSC Adv. 2023 May 12;13(21):14501-14505. doi: 10.1039/d3ra02407e. eCollection 2023 May 9.
Herein we report an N-H functionalization of O-substituted hydroxamic acid with diazo esters under blue LED irradiation conditions. The present transformations could be performed efficiently under mild conditions without use of catalyst, additive and N2 atmosphere. Interestingly, when THF and 1,4-dioxane were employed as the reaction solvents, an active oxonium ylide involved three-component reaction and an N-H insertion of carbene species into hydroxamate occurred, respectively.
PMID:37188246 | PMC:PMC10176041 | DOI:10.1039/d3ra02407e