How Reaction Conditions May Influence the Regioselectivity in the Synthesis of 2,3-Dihydro-1,4-benzoxathiine Derivatives
作者:Andrea Casiraghi、Ermanno Valoti、Lorenzo Suigo、Angelica Artasensi、Erica Sorvillo、Valentina Straniero
DOI:10.1021/acs.joc.8b02012
日期:2018.11.2
exploration of different reaction conditions aiming to obtain both 2,3-dihydro-1,4-benzoxathiine-2-yl derivatives and 2,3-dihydro-1,4-benzoxathiine-3-yl ones is reported. The treatment of 1,2-mercaptophenol with an organic base and a specific 2-bromo acrylate results in a solvent- and substrate-dependent exclusive solvation of O- and S-anions, thus managing the regioselectivity.
报道了旨在获得2,3-二氢-1,4-苯并x啶-2-基衍生物和2,3-二氢-1,4-苯并x啶-3-基衍生物的不同反应条件的探索。用有机碱和特定的2-溴丙烯酸酯处理1,2-巯基苯酚会导致O和S阴离子的溶剂和底物依赖性排他溶剂化,从而控制区域选择性。