Model studies are presented that suggest the mechanism of the lanthanide(III) salt catalysed mono acylation of symmetrical diols proceeds via chelation of the diol and the anhydride to the lanthanide salt, followed by an ‘intramolecular’ acyl transfer.
模型研究表明,
镧(III)盐催化对称二元醇单酰化的机理是通过二元醇和酸酐与
镧盐螯合,然后进行 "分子内 "酰基转移。