Ligands for metals and improved metal-catalyzed processes based thereon
申请人:——
公开号:US20040171833A1
公开(公告)日:2004-09-02
One aspect of the present invention relates to ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in transition metal-catalyzed carbon-heteroatom and carbon-carbon bond-forming reactions. The subject methods provide improvements in many features of the transition metal-catalyzed reactions, including the range of suitable substrates, reaction conditions, and efficiency.
The First General Palladium Catalyst for the Suzuki−Miyaura and Carbonyl Enolate Coupling of Aryl Arenesulfonates
作者:Hanh Nho Nguyen、Xiaohua Huang、Stephen L. Buchwald
DOI:10.1021/ja036947t
日期:2003.10.1
for the palladium-catalyzed Suzuki-Miyaura and carbonyl enolate coupling of unactivated aryl arenesulfonates was developed utilizing XPhos, 1, and Pd(OAc)2. This is of significant interest because aryl tosylates and aryl benzenesulfonates are more easily handled and considerably less expensive than aryl triflates. This catalyst system effects the coupling of a variety of aryl, heteroaryl, and extremely
Palladium-Catalyzed Carbonylation of Aryl Tosylates and Mesylates
作者:Rachel H. Munday、Joseph R. Martinelli、Stephen L. Buchwald
DOI:10.1021/ja711449e
日期:2008.3.1
A general protocol for the palladium-catalyzed carbonylation of aryl tosylates and mesylates to form esters has been developed using a catalyst system derived from Pd(OAc)2 and the bulky, bidentate dcpp ligand. The system operates under mild conditions: atmospheric CO pressure and temperatures of 80-110 degrees C. A broad substrate scope has been demonstrated allowing carbonylation of electron-rich
已经使用衍生自 Pd(OAc)2 和庞大的双齿 dcpp 配体的催化剂系统开发了钯催化的甲苯磺酸芳基酯和甲磺酸酯羰基化形成酯的通用方案。该系统在温和的条件下运行:大气 CO 压力和 80-110 摄氏度的温度。 广泛的底物范围已被证明允许富电子、缺电子和杂环甲苯磺酸酯和甲磺酸酯羰基化,反应显示出广泛的官能团宽容。
Practical Electro-Oxidative Sulfonylation of Phenols with Sodium Arenesulfinates Generating Arylsulfonate Esters
A practical and sustainable synthesis of arylsulfonate esters has been developed through electro-oxidation. This reaction employed the stable and readily available phenols and sodium arenesulfinates as the starting materials and took place under mild reaction conditions without additional oxidants. A wide range of arylsulfonate esters including those bearing functional groups were produced in good
tert-BUTYLPHENYL SULFONATE COMPOUND, NONAQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY USING THE SAME, AND LITHIUM SECONDARY BATTERY USING THE SAME
申请人:Abe Koji
公开号:US20100055576A1
公开(公告)日:2010-03-04
The disclosed subject matter relate to a di-tert-butylphenyl alkylsulfonate compound, tert-butylphenyl alkylsulfonate compound, di-tert-butylphenyl arylsulfonate compound or tert-butylphenyl arylsulfonate compound useful as an intermediate raw material of a pharmaceutical, agricultural chemical, electronic material or polymer material and the like, or as a battery material, and also provides a nonaqueous electrolytic solution for a lithium secondary battery having superior cycle performance and other battery properties through the use thereof, and a lithium secondary battery. The disclosed embodiments further relate to a nonaqueous electrolytic solution for use as in a lithium secondary battery containing, in a nonaqueous electrolytic solution in which an electrolyte salt is dissolved in a nonaqueous solvent, 0.01 to 10% by weight of a di-tert-butylphenyl alkylsulfonate compound, tert-butylphenyl alkylsulfonate compound, di-tert-butylphenyl arylsulfonate compound or tert-butylphenyl arylsulfonate compound, and to a lithium secondary battery and a compound.