The selective dealkylations: the formylations of the three easily accessible calix[4]arene conformers immobilized by propyl and isopropyl groups
作者:Weiping Yang、Rong Guo、Wei Wang、Shuling Gong
DOI:10.1016/j.tetlet.2012.02.061
日期:2012.4
accessible calix[4]areneconformers immobilized by four propyl or isopropyl groups by Duff reaction. Propyl group led to exhaustively formylated products due to the weak steric hinderance effect. While as for the isopropoxy calix[4]arenes, with the increase of steric hinderance, 1,3-alternateconformer gave exhaustively formylated product with no alkyl group dealkylating; partial cone conformer gave the