CAS: 5464-28-8; (1,3-Dioxolan-4-yl)Methanol

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CAS号98238-47-2 4-(phenylmethox... | CAS号50-00-0 甲醛 | CAS号56-81-5 甘油 | CAS号109-87-5 甲缩醛 | CAS号7647-01-0 盐酸 | CAS号7664-93-9 硫酸 | CAS号110-88-3 三聚甲醛 | CAS号19921-29-0 4-(pentoxymethy... | CAS号19921-31-4 4-(hexoxymethyl... | CAS号32061-16-8 Benzenesulfonic... | CAS号126121-31-1 4-(2-methylprop... | CAS号98238-47-2 4-(phenylmethox...

4-((Benzyloxy)Methyl)-1,3-Dioxolane置于钯 氢气体系中,用 正庚烷 作为反应溶剂,化学反应 48.0H,以75%的收率获得产物甘油缩甲醛
参考文献:Predvoditelev; Malenkovskaya; Nifant'Ev,Russian Journal Of General Chemistry,1998,Vol. 68,# 6,P. 881-886
标题:Predvoditelev; Malenkovskaya; Nifant'Ev,Russian Journal Of General Chemistry,1998,Vol. 68,# 6,P. 881-886

专利信息

专利号:US-2010099894-A1
优先权日:2006-10-09
标 题 :Method for the Synthesis of Cyclic Acetals by the Reactive Extraction of a Polyol in a Concentrated Solution
发明人：DUBOIS JEAN-LUC; IBORRA CHORNET SARA; VELTY ALEXANDRA I LUCIENNE; CORMA CANOS AVELINO
权利人:DUBOIS JEAN-LUC; IBORRA CHORNET SARA; VELTY ALEXANDRA I LUCIENNE; CORMA CANOS AVELINO
摘要:A method for the synthesis of cyclic acetals comprises reacting at least one carbonyl-function compound selected from aldehydes, ketones, and/or linear acetals, on a polyol in a concentrated aqueous solution exceeding 20 wt % in a reactor containing an acidic catalyst. The carbonyl-function compound is selected so that the cyclic acetal obtained has a water solubility lower than 20000 mg/kg. During the catalytic reaction for the cyclic acetal synthesis, at least one portion of the organic phase containing the cyclic acetal is separated. The acidic catalysis is either homogeneous when using a water-soluble strong acid, or heterogeneous when using a solid acid such as a resin, a zeolite, or any appropriately acidified solid. The extractive reaction method can be used for obtaining high conversions and selectivity.

专利号:WO-9900440-A1
优先权日:1997-06-26
标 题:Synthesis of a dendritic polyalcohol
发明人：IHRE HENRIK; HULT ANDERS
权利人:PERSTORP AB; IHRE HENRIK; HULT ANDERS
摘要:A process for a double stage convergent synthesis of a polymeric polyalcohol substantially and preferably built up from polyester units and composed of a monomeric or polymeric core to which at least one hyperbranched dendritic branch (dendron) consisting of a number of branching generations is added. The branching generations comprise a polymeric or monomeric branching chain extender having three reactive functions of which two are hydroxyl groups and one is a carboxyl group. The two hydroxyl groups of the branching chain extender is in a first step ketal protected by reacting said two hydroxyl groups with a ketal. A second step includes protection of the carboxyl group of said branching chain extender. The ketal protected branching chain extender and the carboxyl protected chain extender are then employed for repeated addition in a number of step yielding a predetermined number of branching generations. The thus synthesized dendron is finally added to a core having reactive hydroxyl or epoxide groups and the ketal protected hydroxyl groups are optionally deprotected.

专利号:US-11717498-B2
优先权日:2013-12-31
标题 :Methods of treatment using amphetamine controlled release, prodrug, and abuse deterrent dosage forms
发明人：POPP KARL; MECKLER HAROLD
权利人:Chemapotheca LLC; PHARMAPOTHECA A INC
摘要:The invention also relates to pharmaceutical compositions comprising highly pure amphetamine and amphetamine-class compounds resulting from the synthesis of chiral and racemic amphetamine derivatives by stereospecific, regioselective cuprate addition reaction with aziridine phosphoramidate compounds, and to methods of manufacturing, delivering, and using the amphetamine compounds resulting from the synthesis of chiral and racemic amphetamine derivatives by stereospecific, regioselective cuprate addition reaction with aziridine phosphoramidate compounds.

专利号:US-4814347-A
优先权日:1985-07-22
标 题:Anthelmintic spiroketals and method of use
发明人：NELSON STEPHEN J
权利人:UPJOHN CO
摘要:This invention pertains to a new method for killing and controlling worms (Helminths), new formulations for killing and controlling worms in animals, new chemical compounds, and a new synthesis of northern hemisphere intermediates for the synthesis of milbemycin and avermectin macrolides.

专利号:US-6211329-B1
优先权日:1997-06-26
标题:Process for preparation of a dendritic polyol
发明人：REHNBERG NICOLA; PETTERSSON BO; ANNBY ULF; MALMBERG MATS
权利人:PERSTORP AB
摘要:A process for synthesis of a polymeric polyalcohol substantially and preferably built up form polyester units and composed of a monomeric or polymeric initiator molecule to which at least one dentritic branch (dendron) consisting of a number of branching generations is added. The branching generations comprise a polymericor monomeric branching chain extender having three reactive functions of which two are hydroxyl groups. The two hydroxyl groups of the ranching chain extender is acetal protected by reaction between said two hydroxyl groups and an acetal-forming carbonyl compound, preferably an aldehyde. The acetal protected branching chain extender is then employed for addition to the initiator molecule of a first branching generation followed by an optional deprotection of the hydroxyl groups by decomposition of acetals and for addition in repeated steps of further branching generations. Additions of branching generations individually employ an acetal protected branching chain extender synthesized from the same or a different branching chain extender and/or acetal-forming carbonyl compound and addition of a branching generation is optionally followed by addition of a spacing generation.

专利号:US-6051711-A
优先权日:1997-10-24
标 题 :Synthesis of swainsonine salts
发明人：TROPPER FRANCOIS; SHAH RAJAN N; SHARMA PRADEEP
权利人:GLYCODESIGN INC
摘要:A method for synthesizing swainsonine salts and intermediates thereof comprising subjecting a compound of the formula I wherein R2 and R2' are the same or different and represent alkyl, halogen, alkenyl, alkoxy, cycloalkyl or aryl which may be substituted, to acid hydrolysis in the presence of a C1-4 alkanol to obtain a crystalline salt of swainsonine; and optionally, recrystallizing the swainsonine salt from a C1-4 alkanol. The reaction may be used in combination with one or more additional reaction steps.