A New Convenient Method For Preparation of Condensed Aromatic and Heterocyclic Thiolactones
作者:Daniel Végh、Jean Morel、Bernard Decroix、Peter Zálupský
DOI:10.1080/00397919208021340
日期:1992.7
Cyclocondensation of the benzylic-type thiols (Ib-VIb) in ortho position on aromatic and heteroaromatic carboxylic acids to form the corresponding thiolactones (Ic-VIc) can be effected with polyphosphate esters (PPE) in organic solvents in 75-90% yields.