CAS: 78-74-0; 1,1,2-Tribromoethane

上下游产品

ethyl bromide Vinyl bromide 1,1-Dibromoethane vinyliodide bromobenzene Vinyl bromide biphenyl benzene

📜溴乙烯 反应生成 1,1,2-三溴乙烷
参考文献:Vasil'Ev,S.V.; Burdelev,O.T.,Journal Of Organic Chemistry Ussr (English Translation),1966,Vol. 2,# 9,P. 1526-1531
标题:Vasil'Ev,S.V.; Burdelev,O.T.,Journal Of Organic Chemistry Ussr (English Translation),1966,Vol. 2,# 9,P. 1526-1531

专利信息

专利号:WO-9714703-A1
优先权日:1995-10-16
标 题:Synthesis of polymerisable phosphodiesters
发明人：DRIVER MICHAEL JOHN; RUSSEL JEREMY COLIN; BROWNE JUDITH ELIZABETH; SAMMES PETER G
权利人:BIOCOMPATIBLES LTD; DRIVER MICHAEL JOHN; RUSSEL JEREMY COLIN; BROWNE JUDITH ELIZABETH; SAMMES PETER G
摘要:A mono- or di-functional phosphoramidite phosphitylating agent is used to phosphitylate an ethylenically unsaturated alcohol. The product may be oxidised to form the corresponding phosphate ester which may be reacted in further steps to form phosphoryl choline derivatives. The process is of value in the synthesis of 2-(Methacryloyloxyethyl)-2'-(trimethylammoniumethyl)phosphate, inner salt. It has the advantage over prior art processes in that the starting materials and intermediates are more stable and consequently easier to handle.

专利号:US-2006229475-A1
优先权日:2005-04-11
标题:Synthesis of hydroxylated hydrocarbons
发明人：WEISS MICHAEL J; SUN SHOULI
权利人:WEISS MICHAEL J; SUN SHOULI
摘要:Ethylene glycol, other diols, triols, and polyols are made in an efficient manner by reacting dibromides with water in the presence of a metal oxide. An integrated process of dibromide formation, alcohol synthesis, metal oxide regeneration, and bromine recycling is also provided.

专利号:US-4111933-A
优先权日:1976-04-30
标题:Protection of functional groups during reaction and their subsequent restoration
发明人：ECKERT HEINER; UGI IVAR; KABBE HANS-JOACHIM
权利人:BAYER AG
摘要:In the process for preparing an organic compound of the formula n n A' -- X n n in which n X is an amino group, a hydroxyl group or a carboxyl group, and n A' is the remainder of the molecule, from an organic compound of the formula n n A -- X n n in which n A is the remainder of the molecule which can undergo reaction to form A', by converting A -- X into a compound of the formula n n A -- Z -- COOR n n in which n Z is --NH--, --O-- or a direct C--C bond, and n R is a radical of the formula ##STR1## IN WHICH Y is a direct C--C single bond, the --CHâ•?CH-- group or an arylene group, n R 1 to R 4 each independently is hydrogen, halogen or an alkyl, aryl, aralkyl, alkoxycarbonyl, alkylaminocarbonyl, arylaminocarbonyl or cycloalkylaminocarbonyl radical, or n R 1 + r 2 and R 3 + R 4 each independently completes a 5- or 6-membered carbocyclic ring, or n R 1 and R 3 conjointly with the grouping --C--Y--C-- forms a carbocyclic ring with 5 or 6 carbon atoms, and Hal is halogen, n Thereby to protect X, then converting A -- Z -- COOR into a compound of the formula n n A' -- Z -- COOR n n and then treating the compound A' -- Z -- COOR to restore the group X, the improvement which comprises effecting the treatment of the compound A' -- Z -- COOR with an alkali metal compound of a complex of monovalent cobalt. The process is applicable particularly to aminocarboxylic acids including intermediates from various stages of the synthesis of penicillins and cephalosporis.

专利号:US-7833926-B2
优先权日:2005-07-01
标题 :Arylphenoxy catalyst system for producing ethylene homopolymer or copolymers of ethylene and α-olefins
发明人：WOO TAE WOO; OK MYUNG AHN; HAHN JONG SOK; LEE MAL-OU; KANG SANG OOK; KO SUNG-BO; KIM TAE-JIN; KIM SUNG-KWAN
权利人:SK ENERGY CO LTD
摘要:The present invention relates to an arylphenoxy catalyst system producing an ethylene homopolymer or copolymers of ethylene and α-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and α-olefins having a high molecular weight under a high temperature solution polymerization condition using the same. The catalyst system includes a group IV arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst, a cyclopentadiene derivative and arylphenoxide as fixed ligands are located around the group IV transition metal, arylphenoxide is substituted with at least one aryl derivative and is located at the ortho position thereof, and the ligands are not crosslinked to each other. The catalyst includes an environmentally-friendly raw material, synthesis of the catalyst is economical, and thermal stability of the catalyst is excellent. It is useful for producing an ethylene homopolymer or copolymers of ethylene and α-olefins having various physical properties in commercial polymerization processes.

专利号:US-10407402-B1
优先权日:2019-02-13
标题:Method for synthesis of chalcogenophenes
发明人：HAN CHIEN-CHUNG; KARAPALA VAMSI KRISHNA
权利人:UNIV NAT TSING HUA
摘要:A method of forming a chalcogenophene compound of formula (I) includes reacting a compound of formula (II) with a chalcogenide salt in presence of a proton source. n nY is O, S, Se, Te or Po. R 1 is hydrogen, deuterium, an aliphatic, heteroaromatic, or aromatic group, or a precursor of a leaving group Z whose conjugate acid (HZ) has pK a less than 30. R 2 is hydrogen, deuterium, or an aliphatic, heteroaromatic, or aromatic group. R 1 and R 2 may be the same or different, and may joint together to form a saturated or unsaturated, heteroalicyclic or alicyclic ring. R 3 is, for example, alkyl, aryl, heteroaryl, organosilyl, organotin, or organogermyl. R 3 ′ is the same as R 3 or is hydrogen. X is a precursor of a leaving group X whose conjugate acid (HX) has a pK a of less than 30.

专利号:US-2021171437-A1
优先权日:2017-07-17
标题 :Peptide nucleic acid (pna) monomers with an orthogonally protected ester moiety and novel intermediates and methods related thereto
发明人：COULL JAMES M; GILDEA BRIAN D
权利人:VERA THERAPEUTICS INC
摘要:The present disclosure pertains to peptide nucleic acid (PNA) monomers and oligomers, as well as methods and compositions useful for the preparation of PNA monomer precursors (e.g. PNA Monomer Esters, Backbone Esters and Backbone Ester Acid Salts, as described below) that can be used to prepare PNA monomers wherein said PNA monomers can be used to prepare said PNA oligomers. In some embodiments, the disclosure features sulfonic acid salts of Backbone Ester compounds, which sulfonic acid salts generally tend to be crystalline and can be obtained in reasonably good yield, often without requiring any chromatographic purification of the reaction product of the Backbone Ester synthesis reaction. This disclosure also pertains to novel methods for the synthesis of said Backbone Ester compounds and novel methods for the formation of the related sulfonic acid salts. Exemplary ester groups include, but are not limited to, 2,2,2-trichloroethy-(TCE), 2,2,2-tribromoethyl-(TBE), 2-iodoethyl-groups (2-IE) and 2-bromoethyl-(2-BrE) as the ester group. These particular ester groups can be removed under conditions where both Boc and Fmoc protected amine groups are stable.