Synthesis p. 1491 - 1492 (1995)
Update date:2022-08-16
Topics:
Martins
Freitag
Flores
Zanatta
A one-pot synthesis of ethoxycarbonylpyrazoles 2a-e, by the cyclocondensation of β-alkoxyvinyl trichloromethyl ketones 1a-e with hydrazine hydrochloride under mild conditions, is reported. A study using compounds 1a-e with different substituents proved that these are versatile building blocks for the synthesis of pyrazole derivatives, having a 3(5)-ethoxycarbonyl substituent, in good yields (70-91%).
View MoreChangzhou naidechemical Co.Ltd
Contact:+86-519-82589807
Address:NO.25,Houyang street,Jintan,Changzhou City
Tangshan Wisdom Trading Co.,Ltd
Contact:86 315 2222979
Address:No.41 BeiXinXi Road, Yangguang building 1-1102 , Tangshan, Hebei, China
Beijing Greenchem Technology Co.,Ltd. ( Panjin Greenchem Technology Co.Ltd .)
website:http://www.bjgreenchem.com/
Contact:+86-427-6515887
Address:301,302, 3rd Floor, Building C-7, Dongsheng Science Park, Northern Territory, Zhongguancun, No. 66, Xixiaokou Road, Haidian District, Beijing
Ningbo Inno Pharmchem Co., Ltd.
Contact:86-574-87319282
Address:6F-5,NO.163 RUIQING RD.,NINGBO 315000 CHINA
Wuxi Innopal International Trade CO.,LTD
Contact:+86-510-80711901-8003
Address:Room 402,Building 5,Longze Garden,No.17,South huanjiu Road,Yixing City, Jiangsu,China
Doi:10.1080/00958972.2020.1819538
(2020)Doi:10.1039/c1ob05205e
(2011)Doi:10.1039/b823297k
(2009)Doi:10.1021/ic503012s
(2015)Doi:10.1021/jacs.7b03562
(2017)Doi:10.1016/S0040-4039(00)85417-9
(1986)