Heterobicyclic pyrazole compounds and methods of use
申请人:Blake F. James
公开号:US20070238726A1
公开(公告)日:2007-10-11
Compounds of Formulas Ia and Ib, and stereoisomers, geometric isomers, tautomers, solvates, metabolites and pharmaceutically acceptable salts thereof, are useful for inhibiting receptor tyrosine kinases and for treating disorders mediated thereby. Methods of using compounds of Formula Ia and Ib, and stereoisomers, geometric isomers, tautomers, solvates and pharmaceutically acceptable salts thereof, for in vitro, in situ, and in vivo diagnosis, prevention or treatment of such disorders in mammalian cells, or associated pathological conditions are disclosed.
Isoquinoline and quinoline have been discovered as novel ligands for palladium-catalyzedoxidative cascade cyclization reactions. With our new catalyst systems (Pd(OAc)2/isoquinoline or quinoline), unsaturated anilides cyclize under an oxygenatmosphere (1 atm) to furnish structurally versatile indoline derivatives in good yields. One C−N bond and two C−C bonds are formed in a single step with excellent
Oxidative Diamination of Alkenes with Ureas as Nitrogen Sources: Mechanistic Pathways in the Presence of a High Oxidation State Palladium Catalyst
作者:Kilian Muñiz、Claas H. Hövelmann、Jan Streuff
DOI:10.1021/ja075041a
日期:2008.1.1
identical mechanism where stereochemistry is concerned. It exemplifies the importance of cationic palladium(IV) intermediates prior to the final reductiveeliminationfrom palladium and proves that the nucelophile for this step stems from the immediate coordination sphere of the palladium(IV) precursor. These results have important implications for the general development of alkene 1,2-difunctionalization
This paper describes a novel palladium-catalyzedoxidativecyclization of bromoalkynes with N-allylamines via cascade formation of C-N and C-C bonds. During this process, the bromine atom was retained to form 3-bromo-pyrroles, which can undergo the subsequent structural modifications.
An atom efficient route to N-aryl and N-alkyl pyrrolines by transition metal catalysis
作者:Supaporn Sawadjoon、Joseph S. M. Samec
DOI:10.1039/c0ob00383b
日期:——
The synthesis of N-aryl, N-tosyl, and N-alkyl pyrrolines fromallylalcohols and amines has been developed. The reaction sequence includes a palladium-catalyzed allylation step in which non-manipulated allylalcohol is used to generate the diallylated amine in good to excellent yield. An excess of allylalcohol was necessary for efficient diallylation of the amine, where the excess alcohol could be
已经开发了由烯丙醇和胺合成N-芳基,N-甲苯磺酰基和N-烷基吡咯啉的方法。反应序列包括钯催化的烯丙基化步骤,其中使用未处理的烯丙醇以良好至极佳的产率生成二烯丙基化的胺。过量烯丙醇对于胺的有效二烯丙基化是必需的,其中过量的醇可以循环三次。对于芳基和甲苯基胺,使用Pd [P(OPh)3 ] 4;对于苄基和烷基胺,使用包含Pd(OAc)2,P n Bu 3和BEt 3的催化体系。胺的电子性质和空间影响都影响烯丙基化的效率。通过(H 2 IMes)(PCy 3)Cl 2 RuCHPh催化的闭环复分解,将分离出的二烯丙基化胺转化为它们相应的吡咯啉,收率良好。开发了一个一锅反应,其中苯胺将其转化为相应的吡咯啉,而无需分离二烯丙基化的中间体。此一锅法反应已成功放大至1 mL苯胺其中分离出N-苯基吡咯啉的产率为95%。证明了分两步制备3-甲基-1-苯基吡咯啉的反应的通用性。