Controlling Regiochemistry in Negishi Carboaluminations. Fine Tuning the Ligand on Zirconium
摘要:
The species on the zirconocene catalyst is changed from two Cp's to the Brintzinger ligand and catalytic amounts of MAO are used to usually effect a >99% regiocontrol of Negishi carboaluminations of 1-alkynes in toluene.
Practical, cost-effective synthesis of ubiquinones
申请人:Lipshutz H. Bruce
公开号:US20060167289A1
公开(公告)日:2006-07-27
The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention. The invention further provides an improved method for the carboalumination of alkyne substrates.
Practical, Cost-Effective Synthesis of Ubiquinones
申请人:Lipshutz Bruce H.
公开号:US20090131705A1
公开(公告)日:2009-05-21
The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention. The invention further provides an improved method for the carboalumination of alkyne substrates.
[EN] PRACTICAL, COST-EFFECTIVE SYNTHESIS OF UBIQUINONES<br/>[FR] SYNTHÈSE PRATIQUE ET ÉCONOMIQUE D'UBIQUINONES
申请人:ZYMES LLC
公开号:WO2007078679A2
公开(公告)日:2007-07-12
[EN] The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention. The invention further provides an improved method for the carboalumination of alkyne substrates. [FR] La présente invention concerne un procédé convergent pour la synthèse d'ubiquinones et d'analogues d'ubiquinones, ainsi que des précurseurs d'ubiquinones et leurs analogues qui sont utiles dans les procédés de l'invention. L'invention concerne en outre un procédé amélioré de carboalumination de substrats alcyne.
Controlling Regiochemistry in Negishi Carboaluminations. Fine Tuning the Ligand on Zirconium
作者:Bruce H. Lipshutz、Tom Butler、Asher Lower
DOI:10.1021/ja065769b
日期:2006.12.1
The species on the zirconocene catalyst is changed from two Cp's to the Brintzinger ligand and catalytic amounts of MAO are used to usually effect a >99% regiocontrol of Negishi carboaluminations of 1-alkynes in toluene.