The reaction of benzenethiol with ethylbenzoylacetate in polyphosphoric acid (PPA) at low temperature gave mainly ethyl 3-phenyl-3,3-bis(phenylthio)propionate 8 as an intermediate in the synthesis of thioflavones, while that from t-butylthiobenzene under similar conditions gave ethyl 3-(phenylthio)cinnamate 7 as a major product and many by-products. The reaction constant for intramolecular cyclic
Cyclization of 3-(arylchalcogeno)propenoyl chlorides. 2. Chalcogen and substituent control in the regiochemistry of intramolecular acylation. Preparation of benzo[b]telluropyrones
作者:Michael R. Detty、Bruce J. Murray
DOI:10.1021/ja00342a041
日期:1983.2
NAKAZUMI, HIROYUKI;WATANABE, SHIGERU;KITAGUCHI, TOHRU;KITAO, TEIJIRO, BULL. CHEM. SOC. JAP., 63,(1990) N, C. 847-851