The first oxidativecoupling of alkylnitriles with aromatic carboxylicacids using di-tert-butyl peroxide (DTBP) as oxidant was achieved under the catalysis of ionic Fe(III) complexes bearing an imidazolinium cation. This protocol features nontoxic iron catalysis, direct α-C(sp3)–H bond oxidative esterification of alkylnitriles, non-prefunctionalized starting materials, and a broad substrate scope
Double Addition of Propargylzinc Reagents to Acylcyanohydrins and Cyanocarbonates
作者:Meng Liu、Nejib Dwadnia、Tony Chevalier、Annie Hemon‐Ribaud、Morwenna S. M. Pearson‐Long、Fabien Boeda、Philippe Bertus
DOI:10.1002/ejoc.202200891
日期:2022.10.26
Two darts in the middle! This work reports the doubleaddition of propargylzincreagents to nitriles (acylcyanohydrins and cyanocarbonates). This methodology provides a straightforward access to dipropargylic α,α-disubstituted hydroxyamides or N-Boc-protected amino alcohols which can be converted into functionalized pyridine derivatives after cobalt-catalyzed [2+2+2] cycloaddition reactions involving