[EN] A PROCESS FOR PREPARING HALOGENATED AZAINDOLE COMPOUNDS USING BOROXINE [FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS D'AZAINDOLE HALOGÉNÉS FAISANT APPEL À LA BOROXINE
Preparation of the HIV Attachment Inhibitor BMS-663068. Part 8. Installation of the Phosphonoxymethyl Prodrug Moiety
作者:Richard J. Fox、Benjamin Cohen、Thomas E. La Cruz、James H. Simpson、Adam Freitag、Eric Saurer、Jonathan C. Tripp、Chien-Kuang Chen、Gregory L. Beutner、Victor W. Rosso、Elizabeth Borgeson、Andrew W. Glace、Martin D. Eastgate、Richard L. Schild、Jason T. Sweeney、David A. Conlon
DOI:10.1021/acs.oprd.7b00135
日期:2017.8.18
The reaction optimization of an alkylation to enable the production of the penultimate intermediate of an HIV-attachment inhibitor candidate is described. To address the challenges associated with the reactivity and stability of di-tert-butyl (chloromethyl) phosphate (2), and the poor solubility and reactivity of the starting BMS-626529-Li salt (1), strategic selection of Et4NI and 325 mesh K2CO3 as
描述了烷基化的反应优化,以使得能够产生HIV-附着抑制剂候选物的倒数第二个中间体。为了解决与反应性和二-稳定性相关的挑战叔丁基(氯甲基)酯(2),以及差的溶解性和反应性起始BMS-626529-Li盐(1),等的战略选择4 NI和需要325目K 2 CO 3作为添加剂,并且需要湿CH 3 CN作为溶剂。还开发了水性处理方案以选择性除去不希望的N-6烷基化异构体。最终加工条件导致分离出倒数第二个化合物3 收率高达70%,纯度高。
[EN] A PROCESS FOR PREPARING HALOGENATED AZAINDOLE COMPOUNDS USING BOROXINE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS D'AZAINDOLE HALOGÉNÉS FAISANT APPEL À LA BOROXINE
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2016100625A1
公开(公告)日:2016-06-23
A process for preparing halogenated azaindole compounds makes use of stable reagents including a brominating reagent, a boroxine and a sulfonic anhydride to enhance the selectivity and yield of the final product. In addition, the process is associated with various other advantages, including the ability to recycle reagents, cost reduction, and improved manufacturability.