Facile and specific nickel-catalyzed de-N-allylation
摘要:
A general procedure for a chemoselective removal of the allyl (2-propenyl) functionality on basic, neutral and acidic nitrogens by diisobutylaluminum hydride or trimethylaluminum in the presence of a catalytic amount of (dppp)NiCl2 has been developed. (C) 1998 Elsevier Science Ltd. All rights reserved.
Olefin isomerization by a ruthenium carbenoid complex. Cleavage of allyl and homoallyl groups
作者:Christine Cadot、Peter I Dalko、Janine Cossy
DOI:10.1016/s0040-4039(02)00141-7
日期:2002.3
Ruthenium–carbenoid catalysts such as Grubbs’ complex I mediate efficiently the isomerization of β,γ-unsaturated ethers and amines to the corresponding vinyl ethers and enamines. This reaction can be useful in the deprotection of allyl and homoallyl ethers as well as amines.
Iron-catalyzed remote functionalization of inert C(sp<sup>3</sup>)–H bonds of alkenes <i>via</i> 1,<i>n</i>-hydrogen-atom-transfer by C-centered radical relay
作者:Kang-Jie Bian、Yan Li、Kai-Fan Zhang、Yan He、Tian-Rui Wu、Cheng-Yu Wang、Xi-Sheng Wang
DOI:10.1039/d0sc03987j
日期:——
alternative approach to traditional C–H activation that often involved harsh conditions, and vicinal or primary C–H functionalization, radical relay offers a solution to these long-held problems. Enabled by 1,n (n = 5, 6)-hydrogen atom transfer (HAT), we use a most prevalent moiety, alkene, as the precursor to an sp3 C-centered radical to promoteselective cleavage of inert C(sp3)–H bonds for the generation