Use of Formate Salts as a Hydride and a CO2 Source in PGeP-Palladium Complex-Catalyzed Hydrocarboxylation of Allenes
摘要:
Use of formate salts as a hydride as well as a CO2 source was achieved in a PGeP-palladium complex-catalyzed hydrocarboxylation of allenes through a highly efficient decarboxylationcarboxylation process. This reaction proceeds under mild conditions and provides an alternative strategy for utilizing formate salts as a C1 source.
Photochemical and Electrochemical Reduction of Carbon Dioxide to Carbon Monoxide Mediated by (2,2?-Bipyridine)tricarbonylchlororhenium(I) and Related Complexes as Homogeneous Catalysts
98% were measured in the presence of excess Cl− ions. The photochemical process took place under visible-light irradiation and consumed a tertiaryamine as electron donor. A formato-rhenium complex was isolated in the absence of excess Cl− ions. Substitution by Cl− ion generated free formate, but no CO was detected. Luminescence measurements showed that the tertiaryamine quenches the metal-to-ligand
[ fac -Re(bpy)(CO)3 Cl](bpy = 2,2'-联吡啶)是一种有效的均相催化剂,用于选择性和持续地将CO 2光化学或电化学还原为CO。量子产率为14%,且的98%的电流效率在过量的Cl的存在下进行测量-离子。光化学过程在可见光照射下发生,并消耗了叔胺作为电子供体。甲formato -铼配合物在不存在过量的Cl分离-离子。取代经Cl -离子产生的自由甲酸,但没有检测到CO。发光测量结果表明,叔胺可淬灭the配合物的金属-配体电荷转移激发态通过还原机制,速率常数为3.4×10 7 M -1 S -1。以光化学或电化学方式生产的19e络合物[Re(bpy)(CO)3 X] -似乎是CO生成过程中的活性前体。为了确认产物的来源并研究配体的交换,对衍生自13 C富集的CO 2的13 C富集的羰基r和甲o的络合物进行了详细的光谱学研究。当前CO 2的机制介绍了光还原过程;它涉及到
HETERO-BICYCLIC INHIBITORS OF KRAS
申请人:Incyte Corporation
公开号:US20220389033A1
公开(公告)日:2022-12-08
Disclosed are compounds of Formula I, methods of using the compounds for inhibiting KRAS activity and pharmaceutical compositions comprising such compounds. The compounds are useful in treating, preventing or ameliorating diseases or disorders associated with KRAS activity such as cancer.
Visible-light-promoted hydrocarboxylation of allenes with formate salt and CO2 was developed for the first time using commercially available [Ir(ppy)2(dtbbpy)]PF6 as a photocatalyst. This strategy provides an efficient and practical method to access β,γ-unsaturated linear carboxylic acids in moderate yields with complete regioselectivity.