CAS: 96-45-7; Ethlenethiourea

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N-(2-Aminoethyl)Formamide置于sulfur体系中,化学反应生成 亚乙基硫脲
参考文献:环状硫脲.
标题:环状硫脲.
摘要:
DOI:10.1021/ja01211A509

专利信息

专利号:US-8772526-B2
优先权日:2009-12-21
标 题:Method for preparing dithiocarbamates in particular from polyols of the glycerol type
发明人：JEROME FRANCOIS; DE SOUSA RODOLPHE; BARRAULT JOEL; POUILLOUX YANNICK
权利人:JEROME FRANCOIS; DE SOUSA RODOLPHE; BARRAULT JOEL; POUILLOUX YANNICK; CENTRE NAT RECH SCIENT; UNIV POITIERS
摘要:The present invention concerns a method for the synthesis of glycerol dithiocarbamates or bis-dithiocarbamates (GDTCs) in which a reaction medium comprising (1) a carbonate selected from diethyl carbonate, dimethyl carbonate and ethylene or propylene carbonate associated with a glycerol type polyol in the presence of a basic catalyst or (2) a cyclic carbonate comprising five ring members, in a solvent medium, is supplemented with a primary or secondary amine in the presence of carbon disulphide, and the GDTC formed is recovered. In particular, a glycerol type polyol is brought into the presence of diethyl carbonate in the presence of a catalyst, then a primary or secondary amine is added to the reaction medium in the presence of carbon disulphide, and the GDTC formed is recovered. The invention can be used for one-step synthesis of glycerol dithiocarbamates directly from glycerol as the starting material and solvent. This method involves glycerol, diethyl carbonate, carbon disulphide (CS 2 ) and a primary or secondary amine to produce glycerol dithiocarbamates; the glycerol/NaOH phase can be recycled 6 times without a noticeable drop in yield; the ethyl acetate is also recycled after each extraction.

专利号:US-5210210-A
优先权日:1990-05-09
标 题 :Chiral auxiliaries and their use in the synthesis of chiral molecules
发明人：DAVIES STEPHEN G
权利人:BRITISH PETROLEUM CO PLC
摘要:Chiral imidazolidones and imidazolidinethiones having the general formula: ##STR1## where (a) Z is either oxygen or sulphur n (b) the R groups are independently selected from hydrogen or R 2 CO where R 2 is C 1 to C 10 alkyl, C 2 to C 10 alkenyl or benzyl and n (c) the two R 1 groups are either (1) identical groups selected from C 1 to C 10 alkyl, phenyl or C 1 to C 6 alkyl or alkoxy substituted phenyl or (2) such that together they form an alkylene group of formula --(CH 2 ) n -- where n=3 to 8. n Most preferred are those compounds where both R groups are R 2 CO and there is a C 2 axis of symmetry running along the CZ double bond. Compounds of formula (I) where at least one R group is R 2 CO are efficient chiral auxiliaries for a range of asymmetric electrophilic substitution reactions when used in homochiral form. As such they are important tools for synthesising a range of chiral pharmaceuticals, agrochemicals and the like.

专利号:US-4314066-A
优先权日:1976-11-08
标题 :Synthesis of tetramisole, levamisole and their derivatives
发明人：RAGHU SIVARAMAN; HOFFMANN ARTHUR K; SINGH BALWANT
权利人:AMERICAN CYANAMID CO
摘要:A process for the manufacture of 1-(2-alkoxyethyl)-4-phenyl-4-imidazolin-2-ones, 1-(2-alkoxyethyl)-4-phenyl-2-imidazolidones, 1-(2-alkoxyethyl)-4-phenyl-imidazolidine-2-thiones, certain of the corresponding 1-(2-hydroxyethyl) derivatives, and their 3-acylated derivatives, and certain related compounds which are all useful as intermediates in a new process for the manufacture of the anthelmintic levamisole, (-)-2,3,5,6-tetrahydro-6-phenylimidazo-[2,1-b]thiazole, and its derivatives through conventional resolution procedures. The new process also permits the direct manufacture of optically active 1-(2-alkoxyethyl)-4-phenyl-2-imidazolidone and their 3-acylated derivatives, optically active 1-(2-alkoxyethyl)-4-phenylimidazolidine-2-thiones, and levamisole, the levorotatory isomer of tetramisole, using catalytic amounts of a chiral reducing agent, with the elimination of conventional resolution procedures.

专利号:US-4370482-A
优先权日:1978-02-15
标题:Synthesis of tetramisole, levamisole and their derivatives
发明人：RAGHU SIVARAMAN; HOFFMANN ARTHUR K; SINGH BALWANT
权利人:AMERICAN CYANAMID CO
摘要:A process for the manufacture of 1-(2-alkoxyethyl)-4-phenyl-4-imidazolin-2-ones, 1-(2-alkoxyethyl)-4-phenyl-2-imidazolidones, 1-(2-alkoxyethyl)-4-phenyl-imidazolidine-2-thiones, certain of the corresponding 1-(2-hydroxyethyl) derivatives, and their 3-acylated derivatives, and certain related compounds which are all useful as intermediates in a new process for the manufacture of the anthelmintic levamisole, (-)-2,3,5,6-tetrahydro-6-phenylimidazo-[2,1-b]thiazols, and its derivatives through conventional resolution procedures. The new process also permits the direct manufacture of optically active 1-(2-alkoxyethyl)-4-phenyl-2-imidazolidone and their 3-acylated derivatives, optically active 1-(2-alkoxyethyl)-4-phenylimidazolidine-2-thiones, and levamisole, the levorotatory isomer of tetramisole, using catalytic amounts of a chiral reducing agent, with the elimination of conventional resolution procedures.

专利号:US-7919630-B2
优先权日:2005-09-30
标题 :Synthesis of imidazole 2-thiones via thiohydantoins
发明人：GARST MICHAEL E; DOLBY LLOYD J; ESFANDIARI SHERVIN; AVEY JR ALFRED A; MACKENZIE VIVIAN ROSE; MUCHMORE CHARLES DAVID
权利人:ALLERGAN INC
摘要:The present invention provides a method of making an imidazole 2-thione which comprises the step(s) of reducing a thiohydantoin to said imidazole-2-thione.

专利号:WO-2012002913-A1
优先权日:2010-07-02
标 题:Process of forming a cyclic imide
发明人：HONG SOON HYEOK; ZHANG JIAN; MUTHAIAH SENTHILKUMAR; GHOSH SUBHASH CHANDRA
权利人:UNIV NANYANG TECH; HONG SOON HYEOK; ZHANG JIAN; MUTHAIAH SENTHILKUMAR; GHOSH SUBHASH CHANDRA
摘要:A process is provided for the synthesis of a cyclic imide. A primary amine and a diol compound are contacted in the presence of a Ruthenium (II) complex. The Ruthenium (II) catalyst includes at least one of an alicyclic ligand, an aromatic ligand, an arylalicyclic ligand, an arylaliphatic ligand and a phosphine ligand.