Regioselective Addition of Sulfur and Amine Nucleophiles To Assemble S═C–S, S–N, and Umpolung C–N Bonds: Exploration of the −CBr<sub>3</sub> Group as a Synthetic Equivalent of S═C–S
作者:Ankush Gupta、Guddeangadi N. Gururaja
DOI:10.1021/acs.orglett.4c00157
日期:2024.3.8
regioselective addition of sulfur and amine nucleophiles to a −CBr3 unit and nitromethyl moiety in a molecule with the installation of a five-diverse bond structure to novel isothiazole-5(2H)-thione is demonstrated. Umpolung of the nitromethyl group leads to a novel scaffold with selective C–N bond formation. Consequently, differentiating reactive centers by sulfur and amine nucleophiles has been proposed
Formation of Five-Membered Cyclic Orthoesters from Tribromides with Participation of a Neighboring Carbonyl Group
作者:Guddeangadi N. Gururaja、Shaikh M. Mobin、Irishi N. N. Namboothiri
DOI:10.1002/ejoc.201100042
日期:2011.4
but synthetically useful γ-keto esters. The intermediacy of dihydrofurans in the one-pot transformation of keto tribromides into γ-keto esters provides evidence for the active participation of the neighboringcarbonylgroup in the alcoholysis of the tribromide moiety.