Tetrahedron p. 7219 - 7226 (1990)
Update date:2022-07-29
Topics:
Donnelly, John A.
Higginbotham, Clement L.
Dihydrochalcones, formed by bromomethylation of the side-chain of 2'-acetoxychalcones, were found to produce minor quantities of flavones as well as the major product, aurones, when cyclized by aqueous ethanolic sodium hydroxide.The yields of flavone increased with increasing base concentration.The optimum concentration of hydroxide for aurone formation was below 1percent.Greatly diminished yields of O-heterocycles were obtained when a nitro substituent was introduced para to the cyclizing 2'-oxy function.
View Morewebsite:http://www.herbpurify.com
Contact:0086-028-85249238
Address:Room709-C1,Incubator Building, Tianfu Life Science Park No.88,Keyuan Road,Gaoxin district,Chengdu City,Sichuan Prov,China
Jinan Yijialian Economic and Trade Development Co., Ltd.
Contact:+86 0531-66729596
Address:jinan
Zhejiang Genebest Pharmaceutical Co.,Ltd.
Contact:0086-571-63532866
Address:No.1 Jinboshi Rd Lishan Town Fuyang City Zhejiang Province China
Shanghai Yurui Biotechnology(Anyang) Pharmaceutical Co., Ltd
Contact:+86-0372-3662335 +86-0372-3661988
Address:hanling industrial park anyang
Yixing Bluwat Chemicals Co., Ltd.
Contact:+86 510 87821568
Address:Yongan Road, Yixing Chemical Industrial Park, Yixing, Jiangsu, China
Doi:10.1016/j.tetlet.2011.05.147
(2011)Doi:10.1007/BF00898755
(1958)Doi:10.1016/S0040-4020(01)86755-7
(1990)Doi:10.1055/s-0030-1260557
(2011)Doi:10.1039/c1dt10202h
(2011)Doi:10.1016/j.tet.2019.02.003
(2019)
