An Improved Synthesis of 2<i>H</i>-1,2,6-Thiadiazine 1,1-Dioxides by Condensation of β-Amino and β-Chloro α,β-Unsaturated Ketones with Sulfamides
作者:Angel Alberola、José M. Andrés、Alfonso González、Rafael Pedrosa、Martina Vicente
DOI:10.1055/s-1991-26464
日期:——
Symmetrically substituted β-amino α, β-unsaturated ketones react with sulfamide giving 2H-1,2,6-thiadiazine 1,1-dioxides in excellent yields. Unsymmetrically substituted β-amino and β-chloro α, β-unsaturated ketones also react with benzylsulfamide to yield thiadiazine derivatives in good chemical yields and excellent regioselectivity.
对称取代的δ²-氨基δ±、δ²-不饱和酮与磺酰胺反应,生成 2H-1,2,6-噻二嗪 1,1-二氧化物,收率极高。不对称取代的δ²-氨基和δ²-氯δ±, δ²-不饱和酮也能与苄基磺酰胺反应,生成噻二嗪衍生物,化学收率高,具有极好的区域选择性。