Grignard Reagent‐Mediated Regioselective 1,8‐Addition of α‐(2‐Thienylidene)‐β‐ketosulfones
作者:Meng‐Yang Chang、Kuan‐Ting Chen、Hsing‐Yin Chen
DOI:10.1002/adsc.202300227
日期:2023.7.4
α-(2-thienylidene)-β-ketosulfones provides diversified substituted 2-thienylmethyl β-ketosulfones in moderate yields in a diethyl ether–dioxane cosolvent and dioxane (v/v=4/1) under ice-bath conditions. The 1,4-addition of α-heterocyclic β-ketosulfones was also studied. The structure of the key product was confirmed via X-ray analysis. The uses of various reaction solvents and organomagnesium bromides were investigated