CAS: 108-36-1; 1,3-Dibromobenzene

上下游产品

tetrachloromethane N-Bromosuccinimide cyclohexene dibenzoyl peroxide bromobenzene 3,3'-dibromobenzophenone 1,5-dibromo-2,4-dinitrobenzene 1,3-dibromo-2-nitrobenzene

间溴苯甲酸置于溴,1,3-二溴-1,3,5-三嗪-2,4,6-三酮体系中,用 二氯甲烷 用作溶剂,化学反应 24.0H,以92%的收率获得1,3-二溴苯
参考文献: Process For The Preparation Of Organic Bromides[fr] Procédé De Préparation De Bromures Organiques
标题: Process For The Preparation Of Organic Bromides[fr] Procédé De Préparation De Bromures Organiques
摘要:本发明提供了一种有机溴化物的制备方法,通过使用溴异氰酸酯对羧酸进行自由基溴脱羧化反应.

专利信息

专利号:US-7148356-B2
优先权日:2001-07-13
标题:Process for the catalytic synthesis of biaryls and polymers from aryl compounds
发明人：SMITH III MILTON R; MALECZKA ROBERT E
权利人:UNIV MICHIGAN STATE
摘要:A process for producing organic substituted aromatic or heteroaromatic compounds including biaryl and biheteroaryl compounds in a two-step reaction. In the first step, the aromatic or heteroaromatic compound is borylated in a reaction comprising a borane or diborane reagent (any boron reagent where the boron reagent contains a B—H, B—B or B—Si bond) and an iridium or rhodium catalytic complex. In the second step, a metal catalyst catalyzes the formation of the organic substituted aromatic or heteroaromatic compound from the borylated compound and an electrophile such as an aryl or organic halide, triflate (OSO 2 CF 3 ), or nonaflate (OSO 2 C 4 F 9 ). The steps in the process can be performed in a single reaction vessel or in separate reaction vessels. The present invention also provides a process for synthesis of complex polyphenylenes starting from halogenated aromatic compounds.

专利号:WO-2008101515-A1
优先权日:2007-02-22
标 题:New synthons for the synthesis of chiral peptide nucleic acids and methods for preparing the same
发明人：BIONDI FABIO
权利人:NANODREAM S R L UNIPERSONALE; BIONDI FABIO
摘要:Novel l-acyl-3-amino-4-hydroxymethylpyiÏ„olidine derivatives useful as PNA synthons optionally having protecting groups suitable of removal under mild conditions are disclosed having the formula (E) wherein: R1 is H or R-C(=O), wherein R is straight or branched alkyl, aryl, substituted aryl including from 1 to 5 heteroatoms, a heterocyclic group including from 1 to 3 heteroatoms; R2 is H, a linker bonded to a solid support, or R6-0-C(=0), wherein R6 is an alkyl or substituted alkyl group having a tertiary carbon atom bonded to the oxygen, CHn-Arm-n wherein n is 1 or 2 and m is 2 or 3 and Ar is aryl or substituted aryl, and R3 is a nucleobase selected from thymine I, cytosine II, adenine III, guanine IV, uracil V, xanthine VI and hypoxanthine VII, a derivative of said nucleobases I-VII protected at the reactive functionalities NH2 or imidic NH, a deazacarbocyclic derivative of said nucleobases I-VII optionally protected at the reactive functionality NH2. Also disclosed are novel intermediates useful for the preparation of the aforementioned PNA synthons, as well as to methods for preparing the intermediates and the final synthons. The latter can be useful in the synthesis of peptide nucleic acids (PNAs) and other oligomers such as PNA-DNA chimeras, and may be used in automated synthesizers.

专利号:US-2010137659-A1
优先权日:2006-09-26
标题 :Process for the synthesis of 2,2',6-tribromobiphenyl
发明人：LEROUX FREDERIC; BONNAFOUX LAURENCE; COLOBERT FRANCOISE
权利人:LEROUX FREDERIC; BONNAFOUX LAURENCE; COLOBERT FRANCOISE
摘要:A process for the synthesis of 2,2′,6-tribromobiphenyl.

专利号:US-4997991-A
优先权日:1990-03-26
标 题 :Synthesis of diethynylbenzene
发明人：CAROSINO LAWRENCE E; HERAK DAVID C
权利人:HERCULES INC
摘要:The invention provides an inexpensive synthesis process for preparation of diethynylbenzene monomers that are useful in the preparation of polyacetylenes. This process provides for the preparation of thermally sensitive monomers in a one-pot reaction using readily available materials at low temperatures in an environment capable of absorbing large amounts of energy. Divinylbenzene is first brominated and then dehydrobrominated with sodium hydroxide or potassium hydroxide preferably in the presence of a phase transfer agent followed by distillation to recover the diethylnylbenzene product.

专利号:US-6949647-B2
优先权日:2000-12-21
标 题 :Synthesis of pancratistatin
发明人：PETTIT GEORGE R; MELODY NOELEEN
权利人:UNIV ARIZONA
摘要:(+)-Narciclasine (2), available in quantity from certain Amaryllidaceae species or by total synthesis, is employed in for a ten step synthetic conversion (3.6% overall yield) to natural (+)-pancratistatin (1a). The key procedures involve the epoxidation of natural (+)-narciclasine (2) to an epoxide (6), reduction of the epoxide (6) to diol (8), formation of cyclic sulfate (12) and its ring opening with cesium benzoate followed by saponification of the benzoate to afford (+)-pancratistatin (1a).

专利号:US-7348395-B2
优先权日:2003-12-15
标 题:Synthesis of oligomeric cyanate esters
发明人：KELLER TEDDY M; LASKOSKI MATTHEW
权利人:US NAVY
摘要:A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with a cyanide compound in the presence of a base to form the cyanate ester shown below. The cyanate ester may then be cross-linked to a thermoset having triazine ring cross-links.n nHO—Ar 2 O—Ar 1 —O—Ar 2 n OH