A Diacetate Ketone-Catalyzed Asymmetric Epoxidation of Olefins
作者:Bin Wang、Xin-Yan Wu、O. Andrea Wong、Brian Nettles、Mei-Xin Zhao、Dajun Chen、Yian Shi
DOI:10.1021/jo900330n
日期:2009.5.15
A fructose-derived diacetate ketone has been shown to be an effective catalyst for asymmetricepoxidation. High ee values have been obtained for a variety of trans and trisubstituted olefins including electron-deficient α,β-unsaturated esters as well as certain cis olefins.
果糖衍生的二乙酸酮已被证明是不对称环氧化的有效催化剂。各种反式和三取代烯烃(包括缺电子 α,β-不饱和酯以及某些顺式烯烃)都获得了高 ee 值。
ISOLATION AND SUBSEQUENT UTILIZATION OF SATURATED FATTY ACIDS AND ALPHA-OLEFINS IN THE PRODUCTION OF ESTER-BASED BIOLUBRICANTS
申请人:Miller Stephen Joseph
公开号:US20090285728A1
公开(公告)日:2009-11-19
The present invention is generally directed to the synthesis and/or manufacture of ester-based lubricant compositions. The present invention is also directed to methods of making these and other similar lubricant compositions, and to systems for implementing such methods (processes). In some embodiments, the methods for making such ester-based lubricants utilize a biomass precursor (e.g., triglyceride-bearing vegetable oils) such that the lubricant compositions generated by the methods and systems of the present invention can be properly deemed biolubricants. In these or other embodiments, lubricant precursor species can also be sourced or derived from Fischer-Tropsch (FT) and/or long-chain paraffin pyrolysis reaction products. The ester component of the lubricant compositions, produced in accordance with the methods and systems of the present invention, comprises largely diester species.
Synthesis of Diester-Based Lubricants from Enzymatically-Directed Epoxides
申请人:Miller Stephen Joseph
公开号:US20150140623A1
公开(公告)日:2015-05-21
The present invention is generally directed to methods of making diester-based lubricant compositions, wherein formation of diester species proceeds via esterification of epoxide intermediates, and wherein the epoxide intermediates are generated via an enzymatically-driven mechanism. In some embodiments, the methods for making such diester-based lubricants utilize a biomass precursor and/or low value (e.g., Fischer-Tropsch (FT) olefins and/or alcohols) so as to produce high value diester-based lubricants. In some embodiments, such diester-based lubricants are derived from FT olefins and fatty acids. The fatty acids can be from a bio-based source (i.e., biomass, renewable source) or can be derived from FT alcohols via oxidation.
Diester-Based Lubricants and Methods of Making Same
申请人:Miller Stephen Joseph
公开号:US20080194444A1
公开(公告)日:2008-08-14
The present invention is generally directed to diester-based lubricant compositions. The present invention is also directed to methods of making these and other similar lubricant compositions. In some embodiments, the methods for making such diester-based lubricants utilize a biomass precursor and/or low value Fischer-Tropsch (FT) olefins and/or alcohols so as to produce high value diester-based lubricants. In some embodiments, such diester-based lubricants are derived from FT olefins and fatty acids. The fatty acids can be from a bio-based source (i.e., biomass, renewable source) or can be derived from FT alcohols via oxidation.
Single-stage method for producing alpha-hydroxy ethers by oxidizing C=C unsaturated compounds with hydroperoxides
申请人:——
公开号:US20020072637A1
公开(公告)日:2002-06-13
A single-stage method for producing &agr;-hydroxy ethers by oxidizing olefinic substrates with organic hydroperoxides and opening the resultant oxirane ring by means of monovalent or polyvalent alcohols wherein a molybdenum compound in combination with a compound selected from the group consisting of boron trifluoride, aluminum oxides, 1,8-diazabicyclo-[5.4.0]-undec-7-ene or 1,4-diazabicyclo-[2.2.2]-octane, and mixtures thereof is used as a catalyst system.