[EN] SUBSTITUTED 1,3-PHENYL HETEROARYL DERIVATIVES AND THEIR USE IN THE TREATMENT OF DISEASE [FR] DÉRIVÉS DE 1,3-PHÉNYL HÉTÉROARYLE SUBSTITUÉS ET LEUR UTILISATION DANS LE TRAITEMENT D'UNE MALADIE
[EN] SUBSTITUTED 1,3-PHENYL HETEROARYL DERIVATIVES AND THEIR USE IN THE TREATMENT OF DISEASE [FR] DÉRIVÉS DE 1,3-PHÉNYL HÉTÉROARYLE SUBSTITUÉS ET LEUR UTILISATION DANS LE TRAITEMENT D'UNE MALADIE
Cascade regioselective synthesis of pyrazoles from nitroallylic acetates and N-tosyl hydrazine
作者:Nana Shao、Tong Chen、Taotao Zhang、Huajian Zhu、Qunxiong Zheng、Hongbin Zou
DOI:10.1016/j.tet.2013.12.046
日期:2014.1
A simple, practical, and regioselective synthetic protocol for the formation of pyrazoles was developed. Unlike all other previously reported reactions of nitroallylic acetates, this process was initiated by a S(N)2 reaction at the electrophilic gamma site. A plausible mechanism for the cascade S(N)2-Michael synthesis is proposed. (C) 2013 Elsevier Ltd. All rights reserved.
Structure optimization of Cmpd-15 as negative allosteric modulators for the β2-adrenergic receptor