Amino-substituted heterocycles, compositions thereof, and methods of treatment therewith
申请人:D'Sidocky Neil R.
公开号:US20080242694A1
公开(公告)日:2008-10-02
Provided herein are Heterocyclic Compounds having the following structure:
wherein R
1
, R
2
, X, Y and Z are as defined herein, compositions comprising an effective amount of a Heterocyclic Compound and methods for treating or preventing cancer, inflammatory conditions, immunological conditions, metabolic conditions and conditions treatable or preventable by inhibition of a kinase pathway comprising administering an effective amount of a Heterocyclic Compound to a patient in need thereof.
for the synthesis of highly functionalized molecular targets. 2 Therefore, the catalytic and enantioselective construction of these motifs is a valuable challenge for synthetic chemists. 3 AsymmetricMichaeladdition followed by intramolecular nucleophilic substitution is a representative process for this purpose. There have been several reports on the metal-free, organocatalyzed asymmetric synthesis
Overcoming Selectivity Issues in Reversible Catalysis: A Transfer Hydrocyanation Exhibiting High Kinetic Control
作者:Benjamin N. Bhawal、Julia C. Reisenbauer、Christian Ehinger、Bill Morandi
DOI:10.1021/jacs.0c03184
日期:2020.6.24
Reversible catalytic reactions operate under thermodynamic control and thus establishing a selective catalytic system poses a considerable challenge. Herein, we report a reversible transfer hydrocyanation protocol that exhibits high selectivity for the thermodynamically less favorable branched isomer. Selectivity is achieved by exploiting the lower barrier for C-CN oxidative addition and reductive elimination
Synthetic and mechanistic studies of metal-free transfer hydrogenations applying polarized olefins as hydrogen acceptors and amine borane adducts as hydrogen donors
作者:Xianghua Yang、Thomas Fox、Heinz Berke
DOI:10.1039/c1ob06381b
日期:——
spectroscopy. Deuterium kinetic isotope effects and the traced hydroboration intermediate revealed that the double H transfer process occurred regio-specifically in two steps with hydride before proton transfer characteristics. Studies on substituent effects and Hammett correlation indicated that the rate determining step of the HN transfer is in agreement with a concertedtransitionstate. The very reactive intermediate
极化烯烃的无金属转移氢化(RR'C CEE':R,R'= H或有机基,E,E'= CN或 CO 2我)使用胺硼烷加合物 RR'NH–BH 3(R = R'= H,AB ; R = Me,R'= H,人与生物圈; R = t Bu,R'= H,tBAB; R = R′=我,DMAB通过原位NMR光谱研究作为氢供体的H 2O。氘 动力学同位素效应和所追踪的硼氢化中间体表明,双H转移过程在两个步骤中都发生了区域特异性反应 氢化物质子转移前的特征。对取代基效应和Hammett相关性的研究表明,^ h ñ转移与一致的过渡状态相一致。由AB生成的非常活泼的中间体[NH 2 BH 2 ]通过添加二甲醚被捕集环己烯 进入反应混合物形成 Cy 2 BNH 2。最终产品硼嗪假定(BHNH)3是通过[NH 2 BH 2 ]或其溶剂稳定的衍生物[NH 2 BH 2 ]-(溶剂)脱氢偶联形成的,而不是通过环三硼烷[NH
Highly Efficient C−C Bond-Forming Reactions in Aqueous Media Catalyzed by Monomeric Vanadate Species in an Apatite Framework
reactions such as Michael and aldol reactions in aqueous media and the H−D exchange reactions using deuterium oxide. For example, a 200-mmol-scale Michael reaction under triphasic conditions proceeded rapidly, with an extremely high turnover number of up to 260 400 and an excellent turnover frequency of 48 s-1. No vanadium leaching was detected during the above reactions, and the catalyst was readily recycled