Heterocycles p. 1803 - 1808 (1993)
Update date:2022-08-03
Topics:
Takao, Hisashi
Endo, Yoshinori
Horie, Tokunaru
The palladium-catalyzed coupling reaction of 3-benzyloxy-5-bromo-2-methyl-4H-pyran-4-one (2b) with phenylboronic acid afforded efficiently 3-benzyloxy-2-methyl-5-phenyl-4H-pyran-4-one (3b-1), and the benzyloxy group of the resultant product was cleaved by hydrolysis with conc. hydrochloric acid in acetic acid to give 5-phenyl-3-hydroxy-2-methyl-4H-pyran-4-one (4b-1) in high yield.This method was applicable as a general method for synthesizing 5-aryl-3-hydroxy-4H-pyran-4-ones (4) from the 5-bromo-4H-pyran-4-ones (1).
View MoreQingdao Pana-Life Biochem Co.,Ltd.
Contact:86-532-87683902
Address:No.967 Dalao Road, Licang Zone, Qingdao City,Shandong, China 266021
Contact:+86-579-85206992
Address:No 451 chouzhou north road ,room 1106 int'l business center , yiwu ,china
Wuhan Better Organic Technology Inc.
Contact:13307163183
Address:Wuhan Economic&Technology Development Zone, Hubei
ZHIJIANG ZENVA SINO COMMERCE AND TRADE CO., LTD.
website:http://www.zenvasino.com
Contact:+86-138-72658998
Address:Shibeishan Road,Zhijiang, Hubei, China
Nanjing Capatue Chemical Co., Ltd
Contact:+86-25-86371192 +86-025-85720158
Address:No.20 Jiangjun Avenue, Jiangning Economic & Technical Development Zone
Doi:10.1021/acschemneuro.9b00447
(2019)Doi:10.1007/BF00903115
(1973)Doi:10.1021/jo016325v
(2002)Doi:10.1016/S0968-0896(01)00273-5
(2002)Doi:10.1002/anie.201808646
(2019)Doi:10.1002/hlca.19430260331
(1943)