通过使用草酰胺或 4-羟基吡啶甲酰胺作为配体,Cu 催化的(杂)芳基卤化物磺酰胺化反应具有出色的反应范围。对于溴化物,仅需要 2–5 mol% CuI 和草酰胺。对于氯化物,需要将催化负载增加到 10 mol% Cu 2 O 和配体。在此条件下实现了四种含氯市售药物的直接磺酰胺化和两种磺胺类药物的制备。
已经确定了6-羟基吡啶甲酸酰胺配体家族是Cu催化的杂芳基溴化物和氯化物与杂芳基伯胺的偶联的有效支撑配体。C–N偶联是在80–120°C的DMSO或环丁砜中,以2-10 mol%CuI和支持配体的K 2 CO 3或K 3 PO 4为碱进行的。发现碱的强度对化学选择性和速率有影响。使用K 2 CO 3作为碱,可以在80–120°C的条件下,以2–5 mol%的Cu在芳基氯上进行芳基溴的选择性C–N偶联。含K 3 PO 4作为基础,芳基氯化物能够进行C–N偶联,尽管在120–130°C下需要5–10 mol%的Cu。配体家族的成员可以直接一步一步由6-羟基吡啶甲酸和相应的苯胺制备。
[EN] BENZIMIDAZOLE DERIVATIVES<br/>[FR] DÉRIVÉS DE BENZIMIDAZOLE
申请人:PFIZER
公开号:WO2021124155A1
公开(公告)日:2021-06-24
The invention relates to benzimidazoles of Formula (I) and pharmaceutically acceptable salts thereof, wherein R1 to R6 are as defined in the description; to their use in medicine; to compositions containing them; to processes for their preparation; and to intermediates used in such processes. The benzimidazoles of Formula (I) are ITK inhibitors and are therefore potentially useful in the treatment of a wide range of disorders including, atopic dermatitis.
Automated Nanomole-Scale Reaction Screening toward Benzoate Bioisosteres: A Photocatalyzed Approach to Highly Elaborated Bicyclo[1.1.1]Pentanes
作者:James J. Mousseau、Matthew A. Perry、Mark W. Bundesmann、Gary M. Chinigo、Chulho Choi、Gary Gallego、Robert W. Hicklin、Susan Hoy、David C. Limburg、Neal W. Sach、Yuan Zhang
DOI:10.1021/acscatal.1c05076
日期:2022.1.7
Through the application of high-throughput nanoscale optimization, a mild, photocatalyzed, Minisci-like protocol was developed to access highly functionalized 1,3-disubstituted bicyclopentanes. The benzoate-isosteric compounds were prepared using a readily available organic photocatalyst, mitigating the need for precious metals. The strategy described furnished products in synthetically useful yields
[EN] PYRIDO[2,3-D]IMIDAZOLE DERIVATIVES AND THEIR USE AS INHIBITORS OF ITK FOR THE TEATMENT OF SKIN DISEASE<br/>[FR] DÉRIVÉS DE PYRIDO[2,3-D]IMIDAZOLE ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE L'ITK POUR LE TRAITEMENT D'UNE MALADIE DE LA PEAU
申请人:PFIZER
公开号:WO2022130175A1
公开(公告)日:2022-06-23
The invention relates to imidazopyridines of Formula (I) and pharmaceutically acceptable salts thereof, wherein R0to R5are as defined in the description; to their use in medicine; to compositions containing them; to processes for their preparation; and to intermediates used in such processes. The benzimidazoles of Formula (I) are ITK inhibitors and are therefore potentially useful in the treatment of a wide range of disorders including, atopic dermatitis.
[EN] PROCESS FOR PREPARATION OF PALBOCICLIB<br/>[FR] PROCÉDÉ DE PRÉPARATION DE PALBOCICLIB
申请人:PFIZER IRELAND PHARMACEUTICALS
公开号:WO2022091001A1
公开(公告)日:2022-05-05
The present invention relates to improved processes for the preparation of palbociclib. The invention further provides intermediates and processes for the preparation of intermediates useful for the preparation of palbociclib.
pH-Dependent Degradation of T3P-Related Byproducts
作者:Andrew Davidson、David A. Foley、Heather Frericks-Schmidt、Sally Gut Ruggeri、Madeline Herman、Shawn LaCasse、Yizhou Liu、Emma L. McInturff、Ronald Morris、Naila Mugheirbi、Brian Samas、Aritra Sarkar、Robert A. Singer、Faith Witkos、Shu Yu