This invention relates generally to synthetic procedures that include the step of ring-opening metathesis of cyclic olefins and reaction with an acyclic diene co-reactant to produce regularly repeating A,B-alternating olefin polymers. The A,B-alternating polymers are produced by varying reaction conditions and/or reactant proportions and using only two types of olefin metathesis (ring-opening and cross) to provide regularly repeating ABAB. . . etc. polymers via ring-opening metathesis polymerization (ROMP). More particularly, the invention pertains to synthesis of A,B-alternating olefin polymers via olefin metathesis reactions using a Group 8 transition metal complex as the metathesis catalyst. Polymers provided herein have utility in a variety of fields, including not only polymer chemistry per se, but also in the pharmaceutical, biomedical, and packaging industries where the structure and properties of polymers need to be tightly controlled.
Ring-Expansion Of Cyclic Olefins Metathesis Reactions With An Acyclic Diene
Choon Woo Lee - Pasadena CA, US Hyunjin M. Kim - San Ramon CA, US Robert H. Grubbs - South Pasadena CA, US
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
C08F 4/44 B01J 31/38
US Classification:
526336, 526171, 526172, 502152, 502155
Abstract:
This invention relates generally to synthetic procedures that include the step of ring-opening metathesis of cyclic olefins and reaction with an acyclic diene co-reactant to produce olefin macrocycles by ring expansion, or alternatively. The ring expansion of the cyclic olefin is provided by three types of sequential olefin metathesis (ring-opening, cross, and ring-closing olefin metathesis). More particularly, the invention pertains to synthesis of olefin macrocycles via olefin metathesis reactions using a Group 8 transition metal complex as the metathesis catalyst. Macrocycles provided herein have a variety of uses in the pharmaceutical, biomedical, organic synthesis and chemical industries, such as the production of crown ethers that are useful as metal complexing species.
Choon Woo Lee - La Canada CA, US Soon Hyeok Hong - Pasadena CA, US Daniel P. Sanders - Pasadena CA, US Robert H. Grubbs - South Pasadena CA, US Richard L. Pederson - San Gabriel CA, US
Assignee:
Materia, Inc. - Pasadena CA
International Classification:
C07C 69/52
US Classification:
560205
Abstract:
The present invention relates to the use of isomerization inhibitors in olefin metathesis reactions. The inhibitors are low molecular weight organic acids such as formic acid, acetic acid, benzoic acid, and the like.
Ring Opening Cross-Metathesis Reaction Of Cyclic Olefins With Seed Oils And The Like
Elevance Renewable Sciences, Inc. - Boilingbrook IL
International Classification:
C07C 51/00 C07C 67/00
US Classification:
554124, 560128
Abstract:
This invention relates generally to olefin metathesis, and more particularly relates to the ring-opening, ring insertion cross-metathesis of cyclic olefins with internal olefins such as seed oils and the like. In one embodiment, a method is provided for carrying out a catalytic ring-opening cross-metathesis reaction, comprising contacting at least one olefinic substrate with at least one cyclic olefin as a cross metathesis partner, in the presence of a ruthenium alkylidene olefin metathesis catalyst under conditions effective to allow ring insertion cross metathesis whereby the cyclic olefin is simultaneously opened and inserted into the olefinic substrate. The invention has utility in the fields of catalysis, organic synthesis, and industrial chemistry.
The disclosure provides methods and materials suitable for preparing coating layers on substrates. The coatings comprise quaternary amine groups and therefore impart anti-bacterial properties to the substrate. In one embodiment, for example, there is provided a quaternary amine-containing polymeric coating comprising propylene and ethylene repeat units.
Russell David Moore - St Paul MN, US Choon Hyong Lee - Irvine CA, US
International Classification:
A61B 17/50 A61B 17/3209
Abstract:
An implant removal device includes a body, a first arm, a second arm, an actuation interface, and an extraction member. The first arm is supported at the body and configured to move relative to the body between a retracted position and a skin gripping position. The second arm is supported at the body and configured to move relative to the body between the retracted position and the skin gripping position. The actuation interface is supported at the body. The actuation interface is configured to receive a first actuation input thereat to cause at least one of the first arm and the second arm to move from the skin gripping position to the retracted position. The extraction member is supported at the body and located between the first arm and the second arm.
Synthesis Of Straight-Chain Lepidopteran Pheromones Through One- Or Two- Carbon Homologation Of Fatty Alkenes
Methods for the preparation of alkenes including insect pheromones are described. The methods include homologation reactions employing reagents such as 1,3-diesters, epoxides, cyanoacetates, and cyanide salts for elongation of starting materials and intermediates by one or two carbon atoms. The alkenes include insect pheromones useful in a number of agricultural applications.
- Pasadena CA, US Choon Woo LEE - La Canada CA, US
International Classification:
C08G 73/02 C09D 179/02
Abstract:
The disclosure provides methods and materials suitable for preparing coating layers on substrates. The coatings comprise quaternary amine groups and therefore impart anti-bacterial properties to the substrate. In one embodiment, for example, there is provided a quaternary amine-containing polymeric coating comprising propylene and ethylene repeat units.
Medical School Kyungpook Natl Univ, Coll of Med, Taegu, So Korea Graduated: 1968
Languages:
English Korean
Description:
Dr. Lee graduated from the Kyungpook Natl Univ, Coll of Med, Taegu, So Korea in 1968. He works in Dearborn, MI and specializes in Radiation Oncology. Dr. Lee is affiliated with Beaumont Hospital Taylor, Beaumont Hospital Trenton Southshore Campus, Beaumont Hospital Wayne and Beaumont Oakwood Hospital & Medical Center.
CEO at The BestDraft Company, CEO and President at The BestDraft Company
Location:
Aliso Viejo, California
Industry:
Management Consulting
Work:
The BestDraft Company since Jan 2005
CEO
The BestDraft Company - Orange County, California Area since Jan 2000
CEO and President
University of Michigan - Ann Arbor, Michigan 1997 - 2000
Research Scientist at the Laboratory of Turbulence and Combustion (LTC)
Education:
University of Michigan 1991 - 1997
B.S.Engin., Aerospace Engineering
Technische Universität Wien 1987 - 1991
equivalent of Bachelor of Science, Computer Engineering
Kollegium Kalksburg 1980 - 1987
Matura -- Vienna, Austria
Skills:
Lease Management Lease Management Solution Lease Management Evaluation Lease Management Improvement Lease Management Solution Design Lease Management Solutions Lease Management Solution Implementation Business Process Business Process Evaluation Business Process Improvement Business Process Design Business Process Implementation Software Technology Software Design Software Development Document Drafting Solutions Document Drafting Software Template Standardization Template Consolidation Template Design Business Process Streamlining Business Process Strengthening Business Process Risk Mitigation Lease Drafting Software Lease Drafting Solution Lease Administration Legal Writing Leases Software Business Analysis Enterprise Software Mergers & Acquisitions SaaS Solution Selling Architecture Integration Agile Methodologies Finance Commercial Real Estate Due Diligence Template Strategy Start-ups Business Intelligence Project Portfolio Management Management Consulting CRM Software Project Management Product Management Program Management
Interests:
Commercial Real Estate Lease Management, Business Processes, Software, Mobile Technology, Tennis, Bicycle touring