Reductive Monoalkylation of Aromatic and Aliphatic Nitro Compounds and the Corresponding Amines with Nitriles
作者:Ruel Nacario、Shailaja Kotakonda、David M. D. Fouchard、L. M. Viranga Tillekeratne、Richard A. Hudson
DOI:10.1021/ol047580f
日期:2005.2.1
[reaction: see text] A simple, selective, rapid, and efficient procedure for the synthesis of secondary amines from the reductive alkylation of either aliphatic or aromatic nitro compounds and the corresponding amines is reported. Ammoniumformate is used as the hydrogen source and Pd/C as the hydrogen transfer catalyst. The reaction is carried out at room temperature. The rate differences for the preferential
Assembly of Substituted 2-Alkylquinolines by a Sequential Palladium-Catalyzed CN and CC Bond Formation
作者:Yoshio Matsubara、Saori Hirakawa、Yoshihiro Yamaguchi、Zen-ichi Yoshida
DOI:10.1002/anie.201102076
日期:2011.8.8
Diversity: A range of substituted 2‐alkylquinolines can be prepared in a general and efficient synthetic approach that employs mild reaction conditions (see scheme). The synthesis is based on a sequential palladium‐catalyzed CN and CCbondformation, followed by palladium‐catalyzed aromatization, and results in the formation of the desired compounds in one step.
Copper catalyzed coupling of aryl chlorides, bromides and iodides with amines and amides
作者:Hanhui Xu、Christian Wolf
DOI:10.1039/b823407h
日期:——
A copper(I) catalyzed procedure for carbon–nitrogen bond formation utilizing aryl halides and either amines, including amino acids and diphenylamine, or aliphatic and aromatic amides is described.
The first examples of titanium-catalyzed hydroaminoalkylation reactions of ethylene with secondary amines are presented. The reactions can be achieved with various titanium catalysts and they do not require the use of high pressure equipment. In addition, the first solid-state structure of a titanapyrrolidine that is formed by insertion of an alkene into the Ti-C bond of a titanaaziridine is reported
[EN] PROCESS FOR PREPARING N-SUBSTITUTED 1H-PYRAZOLE-5-CARBOXYLIC ACID COMPOUNDS AND DERIVATIVES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS ACIDE 1H-PYRAZOLE-5-CARBOXYLIQUE N-SUBSTITUÉS ET DE LEURS DÉRIVÉS
申请人:BASF SE
公开号:WO2014184343A1
公开(公告)日:2014-11-20
The present invention relates to a process for preparing N-substituted 1 H-pyrazole-5-carboxylic acid compounds of the formula l-A and derivatives thereof, in particular the corresponding carbonylchloride compounds (acid chlorides). It also relates to the use of these acid chlorides for preparing anthranilamide derivatives that are useful pesticides. in which the variables are as defined in the claims and the specification comprising the steps of i) reacting a compound of the formula (II) with a base selected from combinations of a magnesium-organic compound having a carbon bound magnesium and a secondary amine and magnesium amides of secondary amines in the presence of a lithium halide, where the base is used in an amount sufficient to achieve at least 80 % deprotonation of the compound of formula (II); and subjecting the product obtained in step (i) to a carboxylation by reacting it with carbon dioxide or a carbon dioxide equivalent, to obtain a magnesium salt of the compound of formula (l-A) and optionally aqueous workup to obtain the compound of the formula (l-A) as a free acid.