各种芳族溴化物先用n- BuLi处理,然后再用甲酸乙酯处理,然后在K 2 CO 3存在下与乙醇和分子碘反应,以高收率提供相应的芳族乙基酯。此外,通过用n- BuLi和随后用DMF处理,然后与甲醇,分子碘和K 2 CO 3反应,可以将芳族溴化物以良好的产率转化成相应的芳族甲基酯。通过用n处理,一些芳族化合物也可以高收率转化为相应的芳族酯。-BuLi,然后与甲酸乙酯或DMF进行反应,然后与分子碘和K 2 CO 3反应。本反应为无过渡金属,无一氧化碳的因此为芳族溴化物和芳族化合物到芳族酯的环境友好的一锅转化提供了新颖的途径。
An effective method for alkoxycarbonylation of (hetero)aryl bromides is developed in the presence of in situ-generated phosphinite ligands tBu2POR (R = nBu, nPr, Et or Me). For this purpose commercially available tBu2PCl was used as the pre-ligand in the presence of different alcohols. For the first time cross coupling reactions with two alcohols – one generating the ligand, the other used as substrate
在原位生成的次膦酸酯配体t Bu 2 POR(R = n Bu,n Pr,Et或Me)存在下,开发了一种用于(杂)芳基溴的烷氧羰基化的有效方法。为此目的,在不同醇存在下,将可商购的t Bu 2 PC1用作预配体。首次开发了与两种醇的交叉偶联反应-一种生成配体,另一种用作底物。通过这种方法,可以以更有效的方式进行配体优化,并且可以以良好的产率和选择性获得所需的产物。
[EN] CARBAMOYLMETHOXY- AND CARBAMOYLMETHYLTHIO- AND CARBAMOYLMETHYLAMINO BENZAMIDES FOR COMBATING INVERTEBRATE PESTS<br/>[FR] CARBAMOYLMÉTHOXY- ET CARBAMOYLMÉTHYLTHIO- ET CARBAMOYLMÉTHYLAMINO-BENZAMIDES POUR LUTTER CONTRE DES ORGANISMES NUISIBLES INVERTÉBRÉS
申请人:BASF SE
公开号:WO2013024169A1
公开(公告)日:2013-02-21
The present invention relates to substituted carbamoylmethoxy and carbamoylmethylthio benzamide compounds (I) and the stereoisomers, salts, tautomers and N-oxides thereof and to compositions comprising the same. The invention also relates to the use of the carbamoylmethoxy- and carbamoylmethylthio-benzamide compounds or of the compositions comprising such compounds for combating invertebrate pests. Furthermore, the invention relates to methods of applying such compounds.
[EN] N-THIO-ANTHRANILAMIDE COMPOUNDS AND THEIR USE AS PESTICIDES<br/>[FR] COMPOSÉS N-THIO-ANTHRANILAMIDES ET LEUR UTILISATION COMME PESTICIDES
申请人:BASF SE
公开号:WO2013024003A1
公开(公告)日:2013-02-21
The present invention relates to N-thio-anthranilamide compounds and the stereoisomers, salts, tautomers and N-oxides thereof and to compositions comprising the same. The invention also relates to the use of the N-thio-anthranilamide compounds or of the compositions comprising such compounds for combating invertebrate pests. Furthermore, the invention relates to methods of applying such compounds.
Palladium-Catalyzed Aerobic Oxidative Carbonylation of Arylboronate Esters under Mild Conditions
作者:Qiang Liu、Gang Li、Jun He、Jing Liu、Peng Li、Aiwen Lei
DOI:10.1002/anie.201000460
日期:2010.4.26
title reaction was carried out using [PdCl2(PPh3)2] as the catalyst precursor under very mildconditions (balloon pressure of CO and air, at 40→50 °C), and produced a wide range of aryl carboxyl esters 2 in good to excellent yields. Remarkable selectivity between oxidativecarbonylation and homocoupling of arylboronateesters 1 was also achieved.
Intermediates and processes for preparing substituted chromanol derivatives
申请人:Pfizer Inc.
公开号:US20030158428A1
公开(公告)日:2003-08-21
The invention relates to processes for preparing a compound of the formula
1
and the enantiomer of said compound, wherein the benzoic acid moiety is attached at position 6 or 7 of the chroman ring, and R
1
, R
2
, and R
3
are as defined herein. The invention further relates to intermediates that are useful in the preparation of the compound of formula X above.