Synthesis of [1,2-a]-fused tricyclic dihydroquinolines by palladium-catalyzed intramolecular C–N cross-coupling of polarized heterocyclic enamines
作者:Břetislav Brož、Zdeňka Růžičková、Petr Šimůnek
DOI:10.3998/ark.5550190.p009.723
日期:——
A simple methodology for [1,2-a]-fusedtricyclicdihydroquinolines is established. The key step of the methodology is an intramolecular Buchwald-Hartwig amination reaction of suitable halogenated (both bromo and chloro) cyclic enaminoketones, enaminoesters and enaminonitriles with various ring size (from fiveto seven-membered). Optimal reaction conditions (palladium source, base, ligand) depend on
[EN] FUSED PYRROLE DERIVATES AS ESTROGEN RECEPTOR LIGANDS<br/>[FR] DÉRIVÉS PYRROLE CONDENSÉS SERVANT DE RÉCEPTEURS DES OESTROGÈNES
申请人:KAROBIO AB
公开号:WO2012136772A1
公开(公告)日:2012-10-11
The invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof, wherein Z, A, B, D, E, G, M1, M2, M3, M4, M5, M6, p, q, r, R3, R4, R5 and R6 are as defined in the specification. The invention also provides the use of such compounds in the treatment or prophylaxis of a condition associated with a disease or disorder associated with estrogen receptor activity.
Modular Routes Towards New N,O-Bidentate Ligands Containing an Electronically Delocalised β-Enaminone Chelating Backbone
作者:Udo Beckmann、Eva Eichberger、Monika Lindner、Melanie Bongartz、Peter C. Kunz
DOI:10.1002/ejoc.200800372
日期:2008.8
Nickel complexes with N,O-chelating ligands turned out to be promising catalysts in that field. In this work a series of newN,O ligands with an electronicallydelocalisedβ-enaminonebackbone were synthesised and fully characterised. The ligand design was inspired by the ligand found in the most efficient nickel catalyst for polyketone synthesis and developed to a highly modular LEGO®-like arsenal of
In the pyroglutamicacid series, β-enaminoesters 3 were formed in the 2-position by opening of the corresponding Meldrum's derivative 6, and β-enaminonitriles 4 were obtained by treating carbamate vinylogous 5 by trimethytsilyl iodide. Alkylation and acylation of β-enaminoester 3a was briefly examined.
Square‐Planar 2‐Toluenido(triphenylphosphane)nickel(II) Complexes Containing Bidentate N,O Ligands: An Example of Planar Chirality
作者:Udo Beckmann、Gerhard Hägele、Walter Frank
DOI:10.1002/ejic.200901196
日期:2010.4
Nickel(II) complexes comprising electronically delocalised N,O-chelating ligands are active catalysts in the copolymerisation of carbon monoxide and ethene. Elucidating the mechanism of catalysis presupposes the basic understanding of the intramolecular flexibility of such transition metal complexes. Several nickel(II) complexes with or without planar chirality were synthesised and characterised by
包含电子离域 N,O 螯合配体的镍 (II) 配合物是一氧化碳和乙烯共聚的活性催化剂。阐明催化机理的前提是对这种过渡金属配合物的分子内柔韧性有基本的了解。合成了几种具有或不具有平面手性的镍 (II) 配合物,并通过 NMR 光谱技术和 X 射线衍射进行了表征。