CAS: 115-17-3; Tribromoacetaldehyde

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CAS号75-87-6 三氯乙醛 | CAS号123-63-7 三聚乙醛 | CAS号64-17-5 乙醇 | CAS号598-16-3 三溴乙烯 | CAS号105-57-7 1,1-二乙氧基乙烷 | CAS号60-29-7 乙醚 | CAS号507-42-6 2,2,2-tribromoe... | CAS号761-17-1 DIBROMOACETALDE... | CAS号7726-95-6 溴素 | CAS号33243-81-1 2,2,2-tribromo-... | CAS号507-19-7 溴代叔丁烷 | CAS号3492-46-4 2-bromo-2-oxo-4... | CAS号3039-13-2 二溴乙醛 | CAS号2857-97-8 三甲基溴硅烷 | CAS号68734-70-3 bis(trimethylsi... | CAS号114687-02-4 (2,2-dibromovin... | CAS号75-25-2 三溴甲烷

三聚乙醛置于溴,Sulfur体系中,化学反应生成三溴乙醛
参考文献:Long; Howard,Organic Syntheses,1937,Vol. 17,P. 18
标题:Long; Howard,Organic Syntheses,1937,Vol. 17,P. 18

专利信息

专利号:US-4152517-A
优先权日:1977-10-19
标题:Synthesis of 6-(2-hydroxyphenyl)-3(2H)-pyridazinones from trihalocarbinols
发明人：LEVINSON SIDNEY H; MENDELSON WILFORD L
权利人:SMITHKLINE CORP
摘要:A new synthesis for the preparation of 6-(2-hydroxyphenyl)-3-pyridazinones whose key reaction is cyclizing a 1,1,1-trihalo-2-hydroxy-4-(2-hydroxyphenyl)-1-butanone with hydrazine. 6-(2-Hydroxyphenyl)-3-pyridazinones are important intermediates for preparing medicinally active compounds.

专利号:US-8129560-B2
优先权日:2005-08-15
标 题 :Process for the synthesis of mandipropamid and derivatives thereof
发明人：BOWDEN MARTIN CHARLES; CLARK THOMAS AITCHESON; GIORDANO FANNY; JAU BEAT; SCHNEIDER HANS-DIETER; SEIFERT GOTTFRIED; ZELLER MARTIN; FABER DOMINIK; WISS JUERG
权利人:BOWDEN MARTIN CHARLES; CLARK THOMAS AITCHESON; GIORDANO FANNY; JAU BEAT; SCHNEIDER HANS-DIETER; SEIFERT GOTTFRIED; ZELLER MARTIN; FABER DOMINIK; WISS JUERG; SYNGENTA CROP PROT INC
摘要:A process for the preparation of a compound of formula (I), the process comprising: (i) the reaction of a compound of formula (III), with a compound of formula (IV) to give a compound of formula (II), and (ii) the reaction of the compound of formula (II) with a leaving group, to give the compound of formula (I).

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-6476236-B1
优先权日:2001-11-26
标题 :Synthesis of 2-cyanoaziridine-1-carboxamide
发明人：REMERS WILLIAM; IYENGAR BHASHYAM
权利人:UNIV ARIZONA
摘要:The present invention provides a process for producing an aziridine-1-carboxamide of the formula: n from an aziridine of the formula: n and an isocyanate of the formula R 5 —Nâ•?Câ•?O, where R 1 , R 2 , R 3 , R 4 and R 5 are those defined herein. In addition, the present invention also provides a process for producing a 4-imino-1,3-diazabicyclo[3.1.0]-hexan-2-one of the formula: n from the aziridine-1-carboxamide of Formula I.

专利号:US-4190730-A
优先权日:1974-10-03
标题:Preparation of 1,1,1-trihalogeno-4-methyl-3-penten-2-ol
发明人：ITOI KAZUO; MORI FUMIO; NISHIDA TAKASHI; OMURA YOSHIAKI
权利人:KURARAY CO
摘要:A 1,1,1-trihalogeno-4-methyl-3-penten-2-ol is prepared by thermally isomerizing 1,1,1-trihalogeno-4-methyl-4-penten-2-ol. The isomerization reaction may be catalyzed by an acid or a transition metal of Group 6B, 7B or 8 of the Periodic Table of Elements, or a compound thereof. The 1,1,1-trihalogeno-4-methyl-3-penten-2-ol thus prepared is useful as a synergist for herbicides or a physiologically active compound, and, additionally, is useful as a starting material for the synthesis of 2,2-dimethyl-3-(2',2'-dihalogenovinyl)-cyclopropane carboxylic esters which are active ingredients of insecticides.

专利号:US-4117247-A
优先权日:1974-10-03
标 题:Preparation of 1,1,1-trihalogeno-4-methyl-3-penten-2-ol
发明人：MORI FUMIO; OMURA YOSHIAKI; NISHIDA TAKASHI; ITOI KAZUO
权利人:KURARAY CO
摘要:A 1,1,1-trihalogeno-4-methyl-3-penten-2-ol is prepared by thermally isomerizing 1,1,1-trihalogeno-4-methyl-4-penten-2-ol. The isomerization reaction may be catalyzed by an acid or a transition metal of Group 6B, 7B or 8 of the Periodic Table of Elements, or a compound thereof. The 1,1,1-trihalogeno-4-methyl-3-penten-2-ol thus prepared is useful as a synergist for herbicides or a physiologically active compound, and, additionally, is useful as a starting material for the synthesis of 2,2-dimethyl-3-(2',2'-dihalogenovinyl)-cyclopropane carboxylic esters which are active ingredients of insecticides.