PROCESS FOR PREPARING KETONES FROM ALPHA-OXO CARBOXYLATES AND ARYL BROMIDES
    8.
    发明申请
    PROCESS FOR PREPARING KETONES FROM ALPHA-OXO CARBOXYLATES AND ARYL BROMIDES 有权
    从α-氧代羧酸酯和芳香族羧酸制备克ON酮的方法

    公开(公告)号:US20090221832A1

    公开(公告)日:2009-09-03

    申请号:US12388779

    申请日:2009-02-19

    Abstract: A process for preparing ketones of the general formula (III) where R is an optionally substituted carbocyclic aromatic radical having 6 to 24 carbon atoms or an optionally substituted alkyl radical or an optionally substituted heteroaromatic radical having 5 to 24 carbon atoms, and R1 is an optionally substituted carbocyclic aromatic radical having 6 to 24 carbon atoms or an optionally substituted heteroaromatic radical having 5 to 24 carbon atoms, by reacting alpha-oxo carboxylates of the general formula (I) whereinn and m is a number in the range from 1 to 6,M(m+) is a cation, andR has the meaning indicated for formula (III),with aryl bromides of the general formula (II) R1—Br   (II) whereR1 has the meaning indicated for formula (III),in the presence of two transition metals or compounds thereof as catalyst, is described.

    Abstract translation: 一种制备通式(III)的酮的方法,其中R是具有6至24个碳原子的任选取代的碳环芳族基团或任选取代的烷基或任选取代的具有5至24个碳原子的杂芳族基团,R 1是 任选取代的碳原子数为6〜24的碳环芳基或具有5〜24个碳原子的任意取代的杂芳族基,通式(I)的α-氧代羧酸盐反应,其中n和m为1〜 6,M(m +)为阳离子,R为式(III)所示的含义,通式(II)的芳基溴<?in-line-formula description =“In-Line Formulas”end =“ 引线“→R1-Br(II)<?in-line-formula description =”In-line Formulas“end =”tail“?>其中R1具有式(III)所示的含义, 金属或其化合物作为催化剂。

    PROCESS FOR THE CATALYTIC SYNTHESIS OF DIARYL ETHERS
    9.
    发明申请
    PROCESS FOR THE CATALYTIC SYNTHESIS OF DIARYL ETHERS 有权
    二元醇的催化合成方法

    公开(公告)号:US20090143594A1

    公开(公告)日:2009-06-04

    申请号:US12275316

    申请日:2008-11-21

    Abstract: Described is a process for preparing diaryl ethers of the formula (I) Ar—O—Ar′  (I) In which Ar is an aryl or substituted aryl group and Ar′ is an aryl, substituted aryl, heteroaryl or substituted heteroaryl group, by reacting an aryl of formula (II) or a aryloxy salt of formula (III) Ar—OH   (II) Ar—OR   (III) In which Ar has the same meaning as in formula (I) and R is an alkali metal, with an aryl or heteroaryl bromide of formula (IV) Ar′—Br   (IV) In which Ar′ has the same meaning as in formula (I), characterized in that the reaction is carried out in the presence of a copper(I)salt and a 1-substituted imidazole as catalyst system.

    Abstract translation: 描述了制备式(I)的二芳基醚的方法<?in-line-formula description =“In-line Formulas”end =“lead”→Ar-O-Ar'(I) -formulae description =“In-line Formulas”end =“tail”?>其中Ar是芳基或取代的芳基,Ar'是芳基,取代的芳基,杂芳基或取代的杂芳基,通过使式 II)或式(III)的芳氧基盐<?in-line-formula description =“In-line Formulas”end =“lead”?> Ar-OH(II)<?in-line-formula description =“In “公式”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> Ar-OR(III)<?in-line-formula description =“In 其中Ar具有与式(I)中相同的含义并且R是碱金属,其中式(IV)的芳基或杂芳基溴<?在线配方说明书 =“在线公式”end =“lead”?> Ar'-Br(IV)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中Ar' 意义如式(I)所示 其特征在于反应在铜(I)盐和1-取代的咪唑作为催化剂体系的存在下进行。

Patent Agency Ranking