溶剂控制的偶氮稠合的杂环杂环在N1-,N2-和N3-位置上的溶剂控制N-烷基化反应,包括吡唑并[3,4- d ]嘧啶,嘌呤,[1,2,3]三唑[4,5]吡啶和相关的重氮化合物
摘要:
使用NaHMDS作为碱,在THF中用碘甲烷将4-甲氧基-1 H-吡唑并[3,4- d ]嘧啶(1b)烷基化,选择性地提供了N2-甲基产物4-甲氧基-2-甲基-2 H-吡唑并[3,相对于N1-甲基产物(2b),以8/1的比例存在4- d ]嘧啶(3b)。有趣的是,在DMSO中进行反应使选择性逆转,以提供4/1的N1 / N2甲基化产物比例。产品3b的晶体结构N1和N7与钠配位表明后者可能增强N2选择性。用26个杂环测试了选择性极限,结果表明,当在THF中进行反应时,N7是控制烷基化的控制元素,对于吡唑并环而言,该环对吡唑并环反应有利于N2,对咪唑和三唑并稠合的环杂环则有利于N3。使用1个H-检测脉冲场梯度受激回波(PFG-STE)NMR确定的离子反应性复合物的分子量。该数据和DFT电荷分布计算表明,紧密离子对(CIP)或紧密离子对(TIP)控制THF中的烷基化选择性,而溶剂分离的离子对(SIPs)是DMSO中的反应性物质。
The present invention provides PI3K protein kinase modulators, methods of preparing them, pharmaceutical compositions containing them and methods of treatment, prevention and/or amelioration of kinase mediated diseases or disorders with them.
Cross-Electrophile Coupling of Unactivated Alkyl Chlorides
作者:Holt A. Sakai、Wei Liu、Chi “Chip” Le、David W. C. MacMillan
DOI:10.1021/jacs.0c04812
日期:2020.7.8
Alkylchlorides are bench-stable chemical feedstocks that remain among the most underutilized electrophile classes in transition metal catalysis. Overcoming intrinsic limitations of C(sp3)-Cl bond activation, we report the development of a novel organosilane reagent that can participate in chlorine atom abstraction under mild photocatalytic conditions. In particular, we describe the application of
The present invention provides PI3K protein kinase modulators, methods of preparing them, pharmaceutical compositions containing them and methods of treatment, prevention and/or amelioration of kinase mediated diseases or disorders with them.
experimental and theoretical studies indicate that silver acetate is the actual catalyst for C-H activation of electron-poor arenes, rather than the previously reported gold(I)-catalyzed process. An unprecedented Au/Ag dual catalysis is proposed, in which silver(I) is responsible for the activation of electron-poor fluoroarenes via a concerted metalation-deprotonation pathway, and gold(III) is responsible
[EN] HYDROISOQUINOLINE OR HYDRONAPHTHYRIDINE COMPOUNDS FOR THE TREATMENT OF AUTOIMMUNE DISEASE<br/>[FR] COMPOSÉS D'HYDROISOQUINOLINE OU D'HYDRONAPHTYRIDINE POUR LE TRAITEMENT D'UNE MALADIE AUTO-IMMUNE
申请人:HOFFMANN LA ROCHE
公开号:WO2022013136A1
公开(公告)日:2022-01-20
The present invention relates to compounds of formula (I) wherein R1, R2, R3a, R3b, R4, Q, Z and Y are as described herein, and their pharmaceutically acceptable salt thereof, and compositions including the compounds and methods of using the compounds.