Journal of Heterocyclic Chemistry p. 889 - 894 (1999)
Update date:2022-08-03
Topics:
Diez-Barra, Enrique
De La Hoz, Antonio
Sanchez-Migallon, Ana
Elguero, Jose
We report a study on the quaternization and dequaternization of pyrazoles by conventional heating and microwave irradiation in solvent-free conditions. Microwave irradiation produces an acceleration in the quaternization rate and a rapid equilibration between quaternized and non quaternized products. Dequaternization is also more rapid and a change on the selectivity is observed using symmetric pyrazolium salts.
View MoreJinan Hongfangde Pharmatech Co.,Ltd
Contact:86-531-88870908
Address:F Bldg. West Unit North Area of Univ. Tech. Garden Xinyu Rd. Jinan New & High Tech Industry Development Zone Shandong, China
Tianjin Crest Pharmaceutical R&D Co., Ltd. （Tianjin Yao Technology Development Co., Ltd.）(expird)
Contact:+86-22-66211386
Address:Building B5-405, No, 80 4th Avenue, TEDA, Tianjin, China P.R. 300457
Hunan Shineway Enterprise Co., Ltd.
Contact:+86-731-86303875
Address:118, Huanghua International Airport Road, Huanghua Town, Changsha, Hunan 410137, China
Lianyungang Ningkang Chemical Co., Ltd
Contact:.+86-518-88588008
Address:http://www.chemnk.com
Heliosense Biotechnologies, Inc.
website:https://www.heliosense.com/
Contact:+86-592-5667290
Address:Xiamen Torch Hi-tech Zone Venture Weiye Building S506
Doi:10.3390/molecules23082015
(2018)Doi:10.1002/ardp.201600368
(2017)Doi:10.1246/cl.1987.219
(1987)Doi:10.1016/j.bmc.2011.07.014
(2011)Doi:10.1002/cphc.201402674
(2015)Doi:10.1021/ja01127a032
(1952)
