Iron-Catalyzed [2π + 2π] Cycloaddition of α,ω-Dienes: The Importance of Redox-Active Supporting Ligands
摘要:
The bis(imino)pyridine iron bis(dinitrogen) complex, (iPrPDI)Fe(N2)2 (iPrPDI = 2,6-(2,6-iPr2C6H3NCR)2C5H3N), serves as an efficient precursor for the catalytic [2pi + 2pi] cycloaddition of alpha,omega-dienes to yield the corresponding bicycles. For amine substrates, the rate of catalytic turnover increases with the size of the nitrogen substituents, demonstrating competing heterocycle coordination and product inhibition. In one case, a bis(imino)pyridine iron azobicycloheptane product was characterized by X-ray diffraction. Preliminary mechanistic studies highlight the importance of the redox activity of the bis(imino)pyridine ligand to maintain the ferrous oxidation state throughout the catalytic cycle.
[2+2]-Photocycloaddition of <i>N</i>-Benzylmaleimide to Alkenes As an Approach to Functional 3-Azabicyclo[3.2.0]heptanes
作者:Yevhen A. Skalenko、Tetiana V. Druzhenko、Aleksandr V. Denisenko、Maryna V. Samoilenko、Oleksandr P. Dacenko、Serhii A. Trofymchuk、Oleksandr O. Grygorenko、Andrey A. Tolmachev、Pavel K. Mykhailiuk
DOI:10.1021/acs.joc.8b00077
日期:2018.6.15
A one-step synthesis of functionalized 3-azabicyclo[3.2.0]heptanes by [2+2]-photochemical intermolecular cycloaddition of N-benzylmaleimide to alkenes was elaborated. The obtained compounds were easily transformed into the bi- and tricyclic analogues of piperidine, morpholine, piperazine, and GABA, which are advanced building blocks for drug discovery.
N-(Aminoheteroaryl)-1H-indole-2-carboxamide derivatives, and preparation and therapeutic application thereof
申请人:DUBOIS Laurent
公开号:US20090156573A1
公开(公告)日:2009-06-18
The invention concerns compounds of general formula (I):
Wherein n, X
1
, X
2
, X
3
, X
4
, Y, Z, Z
1
, Z
2
, Z
3
and Z
4
are as defined herein. The invention also concerns a process for the preparation of compounds of formula (I) and their therapeutic use.
N-(aminoheteroaryl)-1H-indole-2-carboxamide derivatives, and preparation and therapeutic application thereof
申请人:Sanofi-Aventis
公开号:US07786104B2
公开(公告)日:2010-08-31
The invention concerns compounds of general formula (I):
Wherein n, X1, X2, X3, X4, Y, Z, Z1, Z2, Z3 and Z4 are as defined herein. The invention also concerns a process for the preparation of compounds of formula (I) and their therapeutic use.
N-(amino-heteroaryI)-1H-pyrrolopyridine-2-carboxamides derivatives preparation thereof and their use in therapy
申请人:Dubois Laurent
公开号:US08716272B2
公开(公告)日:2014-05-06
The invention relates to compounds of the general formula (I):
Wherein X, Y, Z, Z1, Z2, Z3, Z4 and n are as defined herein. The invention also relates to a method for making the same and to the use thereof in therapy.