Synlett p. 679 - 680 (1997)
Update date:2022-08-16
Topics:
Yu, Hong-Bin
Huang, Wei-Yuan
Treatment of the phenylhydrazone of a methyl ketone (2) or cyclohexanone (3) with N-aryl trifluoroacetimidoyl iodide (1) in the presence of excess sodium hydride resulted in a [1+4] cyclization to give 5-trifluoromethyl pyrazoles (4, 5) regioselectively. The structure of products 4 or 5 was confirmed by the 13C NMR spectra.
View More
Zhuhai Jiacheng Biological Technology Co., Ltd
Contact:0756-8800233
Address:room 222, Lianhua road , Gongbei ,Zhuhai, Guangdong ,China
website:http://www.orchid-chem.com
Contact:+86-571-85395792
Address:607, North Zhongshan Road, Hangzhou 310000 China
Shenzhen Sunrising Industry Co., ltd.
Contact:+86 755 86571158 / 86571159 / 86571160
Address:2108 ZHENYE INT. BUSINESS CENTER,NO.3101-90 QIANHAI RD, NANSHAN,SHENZHEN, CHINA
website:https://www.yacoo.com.cn/en/
Contact:86-512-87182055
Address:No.112 Xinqing Rd, Suzhou Industrial Park, China, 215125, China
Springchem New Material Technology Co.,Limited
website:http://www.spring-chem.com
Contact:86-21-62885108
Address:602B, Building 1, No. 641, Tianshan Road
Doi:10.1016/j.jallcom.2009.07.075
(2009)Doi:10.1002/ejoc.200300784
(2004)Doi:10.1007/s11178-005-0323-7
(2005)Doi:10.1021/ac00279a080
(1985)Doi:10.1016/j.catcom.2014.07.005
(2014)Doi:10.1039/c4cc07430k
(2014)
