Herein is reported a simple and efficient synthesis of isoflavones starting from various substituted phenacyl bromides and salicylaldehydes in presence of NHC. The mechanism involved domino catalysis type approach with consumption and regeneration of catalyst in two catalytic cycles. This method proved to be very lucrative and gives very good yield. The method described here represents an environmentally benign alternative to classical approach.
作者:Sreenivasan Balasubramanian、Muraleedharan G. Nair
DOI:10.1080/00397910008087343
日期:2000.2
presence of BF3.Et2O followed by its treatment at room temperature with N, N'-dimethyl (chloromethylene) ammonium chloride, generated by reacting PCl5 with DMF provides a mild and efficient route for a “one pot” synthesis of Isoflavones in high yields.
Balasubramanian, Sreenivasan; Ward, Donald L.; Nair, Muraleedharan G., Journal of the Chemical Society. Perkin transactions I, 2000, vol. 4, p. 567 - 570
作者:Balasubramanian, Sreenivasan、Ward, Donald L.、Nair, Muraleedharan G.