作者:S.B. Kulkarni、Sukh Dev
DOI:10.1016/0040-4020(68)88004-4
日期:——
Intramolecular acylation with lactones in polyphosphoric acid has been extended to γ- and δ-lactones with angular methyls. It is further shown that hydroxy acids can conveniently replace the corresponding lactones in such reactions. The reaction has also been applied to simple esters.
多磷酸中内酯的分子内酰化作用已扩展为具有角甲基的γ-和δ-内酯。进一步表明,在这种反应中,羟基酸可以方便地代替相应的内酯。该反应也已经应用于简单的酯。