The Methyl Group as a Source of Structural Diversity in Heterocyclic Chemistry: Side Chain Functionalization of Picolines and Related Heterocycles
作者:Victor Mamane、Emmanuel Aubert、Yves Fort
DOI:10.1021/jo071209z
日期:2007.9.1
The reaction of 2-picoline at the methyl group with NDA and KDA followed by dimethyldisulfide trapping furnished, respectively, dithioacetals and trithioortho esters with high selectivity. The method was successfully applied to other methyl-substituted pyridines, quinolines, and pyrazines. Dithioketals were prepared by a one-pot procedure involving the reaction of metalated 2-picoline with 2 equiv