Synthesis of fluorine-containing 3-hydroxyflavanones and isoflavones
作者:T. S. Khlebnikova、Yu. A. Piven′、N. B. Khripach、F. A. Lakhvich
DOI:10.1007/s10600-011-9824-5
日期:2011.3
Fluorine-containing 3-hydroxyflavanones and isoflavones were synthesized by epoxidation of F-containing chalcones by hydrogen peroxide under basic conditions and subsequent intramolecular cyclization of the resulting epoxides using BF3·Et2O. The ratio of products depended on the presence and position of the F atom.
通过在碱性条件下用过氧化氢对含氟查耳酮进行环氧化,然后使用BF3·Et2O对所得环氧化物进行分子内环化,合成了含氟3-羟基黄烷酮和异黄酮。产物的比例取决于 F 原子的存在和位置。
Mphahlele, Malose J.; Fernandes, Manuel A., South African Journal of Chemistry, 2002, vol. 55, p. 97 - 110
作者:Mphahlele, Malose J.、Fernandes, Manuel A.
DOI:——
日期:——
Environmentally benign syntheses of flavanones
作者:Po-Yuan Chen、Tzu-Pin Wang、Michael Y. Chiang、Keng-Shian Huang、Cherng-Chyi Tzeng、Yi-Long Chen、Eng-Chi Wang
DOI:10.1016/j.tet.2011.04.070
日期:2011.6
water in the presence of DABCO at roomtemperature gave 3-hydroxy-1-(2-hydroxylphenyl)-3-arylpropan-1-ones (3a–i) as intermediates. Followed by an intramolecular dehydration of the 3a–i with the modified Mitsunobu’s reaction, the target flavanones (4a–i) were obtained. Moreover, the reaction of 1 and 2 at the same conditions but at reflux gave flavanones in onepot with good yields.