CAS: 3143-02-0; 3-Methyl-3-Oxetanemethanol

相似化合物

99314-44-0 28562-68-7 99419-31-5

专利信息

专利号:WO-0034353-A9
优先权日:1998-11-12
标题 :Method for the synthesis of thermoplastic elastomers in non-halogenated solvents
发明人：SANDERSON ANDREW J; EDWARDS WAYNE
权利人:CORDANT TECH INC; SANDERSON ANDREW J; EDWARDS WAYNE
摘要:A method of preparing a thermoplastic elastomer having A blocks which are crystalline at temperatures below about 75 °C and B blocks which are amorphous at temperatures above about -20 °C is disclosed. The A blocks are derived from oxetane derivatives and/or tetrahydrofuran derivatives. The B blocks are derived from oxetanes, tetrahydrofuran, oxiranes, and derivatives thereof. The A blocks and B blocks are dissolved into solution containing a non-halogenated solvent, preferably tetrahydrofuran. The dissolved A blocks and B blocks are dried of water by azeotropic distillation of the non-halogenated solvent. Next, the dried A blocks and the dried B-blocks are end-capped with a diisocyanate having one isocyanate moiety substantially more reactive with the terminal groups of the blocks than the other isocyanate moiety, whereby the more reactive isocyanate moiety is capable of reacting with the terminal groups of the blocks, leaving the less reactive isocyanate moiety free and unreacted. The end-capped A blocks and the end-capped B blocks are linked together with a linking compound having two isocyanate-reactive groups which are sufficiently unhindered to react with the free and unreacted isocyanate moieties of the end-capped polymers.

专利号:US-9045381-B2
优先权日:2010-10-19
标 题:Ruthenium complexes and their uses in processes for formation and/or hydrogenation of esters, amides and derivatives thereof
发明人：MILSTEIN DAVID; BALARAMAN EKAMBARAM; GUNANATHAN CHIDAMBARAM; GNANAPRAKASAM BOOPATHY; ZHANG JING
权利人:MILSTEIN DAVID; BALARAMAN EKAMBARAM; GUNANATHAN CHIDAMBARAM; GNANAPRAKASAM BOOPATHY; ZHANG JING; YEDA RES & DEV
摘要:The present invention relates to novel Ruthenium catalysts and related borohydride complexes, and the use of such catalysts, inter alia, for (1) hydrogenation of amides (including polyamides) to alcohols and amines; (2) preparing amides from alcohols with amines (including the preparation of polyamides (e.g., polypeptides) by reacting dialcohols and diamines and/or by polymerization of amino alcohols); (3) hydrogenation of esters to alcohols (including hydrogenation of cyclic esters (lactones) or cyclic di-esters (di-lactones) or polyesters); (4) hydrogenation of organic carbonates (including polycarbonates) to alcohols and hydrogenation of carbamates (including polycarbamates) or urea derivatives to alcohols and amines; (5) dehydrogenative coupling of alcohols to esters; (6) hydrogenation of secondary alcohols to ketones; (7) amidation of esters (i.e., synthesis of amides from esters and amines); (8) acylation of alcohols using esters; (9) coupling of alcohols with water to form carboxylic acids; and (10) dehydrogenation of beta-amino alcohols to form pyrazines. The present invention further relates to the novel uses of certain pyridine Ruthenium catalysts.

专利号:US-4952644-A
优先权日:1989-06-07
标题 :Synthesis of ABA triblock polymers and An B star polymers from cyclic ethers
发明人：WARDLE ROBERT B; HINSHAW JERALD C; EDWARDS WILLIAM W
权利人:THIOKOL CORP
摘要:ABA triblock and A n B star polymers are produced by sequential cationic polymerization of 4 and 5 member ring cyclic ethers to initially form a B block and subsequent cationic polymerization of 4 and 5 member ring cyclic ethers to form A blocks at the termini of the B block. The B block is grown from the hydroxyl groups of a polyol having two or more hydroxyl groups, resulting in a B block having terminal hydroxyl functionality of two or greater. In growing each of the B and A blocks, the acid catalyst is used at a molar ratio relative to hydroxyl groups of the polyol initiator of between about 0.05:1 and about 0.5:1.

专利号:US-5099042-A
优先权日:1989-03-14
标 题 :Synthesis of tetrafunctional polyethers and compositions formed therefrom
发明人：WARDLE ROBERT B; HINSHAW JERALD C
权利人:THIOKOL CORP
摘要:Polymers are produced from 4 and 5 member cyclic ethers, which polymers have hydroxyl functionalities of 4. The cyclic ethers are polymerized with an acid catalyst and a tetraol initiator having the general formula: ##STR1##

专利号:US-9260371-B2
优先权日:2004-11-01
标题:Compositions and methods for modification of biomolecules
发明人：BERTOZZI CAROLYN RUTH; AGARD NICHOLAS J; PRESCHER JENNIFER A; BASKIN JEREMY MICHAEL; SLETTEN ELLEN MAY
权利人:UNIV CALIFORNIA
摘要:The present invention provides modified cycloalkyne compounds; and method of use of such compounds in modifying biomolecules. The present invention features a cycloaddition reaction that can be carried out under physiological conditions. In general, the invention involves reacting a modified cycloalkyne with an azide moiety on a target biomolecule, generating a covalently modified biomolecule. The selectivity of the reaction and its compatibility with aqueous environments provide for its application in vivo (e.g., on the cell surface or intracellularly) and in vitro (e.g., synthesis of peptides and other polymers, production of modified (e.g., labeled) amino acids).

专利号:EP-1141062-B1
优先权日:1998-11-12
标题:Synthesis of energetic thermoplastic elastomers containing oligomeric urethane linkages
发明人：SANDERSON ANDREW JOHN; EDWARDS WAYNE
权利人:ALLIANT TECHSYSTEMS INC
摘要:This thermoplastic elastomer is present in a substantially solid state suitable for use as a binder for a propellant, explosive, and/or gas generant of a supplemental restraint system. The thermoplastic elastomer is formed from a composition including A blocks which are crystalline at temperatures below about 75°C and B blocks which are amorphous at temperatures above about -20°C. The A blocks are derived from oxetane derivatives and/or tetrahydrofuran derivatives. The B blocks are derived from oxetanes, tetrahydrofuran, oxiranes, and derivatives thereof. The A and B blocks are end-capped with at least one diisocyanate and linked with at least one difunctional oligomer having two functional groups which are reactive with free and unreacted isocyanate moieties of the diisocyanate.