Transition-Metal-Catalyzed Formation of <i>trans </i>Alkenes via Coupling of Aldehydes
作者:Shifa Zhu、Yuanxi Liao、Shizheng Zhu
DOI:10.1021/ol036197s
日期:2004.2.1
[reaction: see text] Rh(2)(OAc)(4) catalyzed the formation of exclusively trans fluorinated alkenes from aldehydes and pentafluorobenzaldehyde tosylhydrazone salts, which were readily prepared from pentafluorobenzaldehyde using the Bamford-Stevens reaction. A series of pentafluorophenyl-containing alkenes were synthesized from aldehydes in moderate to good yields under mild reaction conditions in a
and inducible nitric oxide synthases (nNOS and iNOS) by a series of 36 indazoles has been evaluated, showing that most of the assayed derivatives are better iNOS than nNOS inhibitors. A parabolic model relating the iNOS inhibition percentage with the difference, Erel, between stacking and apical interaction energies of indazoles with the active site of the NOS enzyme has been established.