Author/Authors :
Lin، نويسنده , , Lee-Gin and Su، نويسنده , , Pi-Guey and Huang، نويسنده , , Jun-Ren and Kuo، نويسنده , , Cheng-Han and Lin، نويسنده , , Chien-Hung and Dai، نويسنده , , Chi-Peng and Chow، نويسنده , , Tahsin J.، نويسنده ,
Abstract :
In the presence of K2CO3 as reaction base, the 25-alkoxy-27-benzoyloxy-calix[4]arenes were converted into 25-alkoxy-26-benzoyloxy derivatives by benzoyl-migration. A benzoyl-migrated reaction mechanism with a cyclic orthobenzoate-like intermediate was proposed, and the mechanism was supported by the identical reaction results on the conversion of 25-ethoxy-27-benzoyloxycalix[4]arene to 25-ethoxy-26-benzoyloxycalix[4]arene, and vice versa.
