α,β-Unsaturated imines via Ru-catalyzed coupling of allylic alcohols and amines
作者:Jared W. Rigoli、Sara A. Moyer、Simon D. Pearce、Jennifer M. Schomaker
DOI:10.1039/c2ob06921k
日期:——
A convenient synthesis of α,β-unsaturated imines requiring only an allylic alcohol, an amine and a Ru catalyst has been developed. The use of large excesses of oxidant and the purification of sensitive intermediates can be avoided.
A highly efficient asymmetric allylboration of isatinimines with γ-substituted allylboronicacids under metal-free conditions was disclosed. Employing chiral amino alcohol as the chirality controller, the reaction proceeded with high efficiency and excellent stereoselectivity, providing a broad range of chiral 3-allyl-3-hydroxyethylamino oxindoles containing adjacent quaternary–tertiary stereocenters
A method for manufacturing a ketone, includes oxidizing an internal olefin or a cyclic olefin having a functional group containing a hetero atom and one carbon-carbon double bond or more at a position other than terminals of a molecule thereof in an amide-based solvent in the presence of water, a palladium catalyst, and molecular oxygen, without oxidizing the functional group, thereby bonding an oxo group to at least one of the carbon atoms constituting the carbon-carbon double bond. The amide-based solvent is represented by formula (1):
wherein R
1
represents an alkyl group having 1 to 4 carbon atoms; R
2
and R
3
each independently represent an alkyl group having 1 to 4 carbon atoms or an aryl group; and when R
1
and R
2
are alkyl groups, R
1
and R
2
may be bonded to each other to form a ring structure.
Copper–dienamine catalysis: γ-oxyamination of α,β-unsaturated aldehydes
作者:Xuan-Huong Ho、Won-Ji Jung、Pranab K. Shyam、Hye-Young Jang
DOI:10.1039/c4cy00271g
日期:——
A multicatalytic system composed of copper complexes and sec-amine compounds is proposed for γ-oxyamination of α,β-unsaturated aldehydes.
提出了由铜配合物和sec-胺化合物组成的多催化系统,用于α,β-不饱和醛的γ-氧胺化反应。
[EN] NOVEL BENZO-1,3-DIOXOLYL- AND BENZOFURANYL SUBSTITUTED PYRROLIDINE DERIVATIVES AS ENDOTHELIN ANTAGONISTS<br/>[FR] DERIVES DE PYRROLIDINE A SUBSTITUTION BENZO-1,3-DIOXOLYL ET BENZOFURANYL SERVANT D'ANTAGONISTES DE L'ENDOTHELINE
申请人:ABBOTT LABORATORIES
公开号:WO1997030045A1
公开(公告)日:1997-08-21
(EN) A compound of formula (I), or a pharmaceutically acceptable salt thereof is disclosed, as well as processes for and intermediates in the preparation thereof, and a method of antagonizing endothelin.(FR) La présente invention concerne un composé représenté par la formule générale (I) ou l'un de ses sels galéniques. L'invention, qui concerne également des procédés convenant à leur préparation, concerne aussi des intermédiaires pour de telles préparations. L'invention concerne enfin un procédé de réalisation d'une fonction antagoniste de l'endothéline.