CAS: 1314-24-5; Phosphorus Trioxide

专利信息

专利号:US-4451666-A
优先权日:1982-08-06
标题:Synthesis of oxalate esters by the oxidative carbonylation of alcohols with a heterogeneous manganese promoted Pd-V-P catalyst
发明人：SOFRANKO JOHN A; GAFFNEY ANNE M
权利人:ATLANTIC RICHFIELD CO
摘要:Synthesis of dialkyl oxalates by the heterogeneous catalyzed oxidative carbonylation of liquid monohydric saturated alcohols of from 1 to 20 carbon atoms with carbon monoxide and oxygen or an oxygen-containing gas in the presence of a catalytic amount of a catalyst comprising palladium or a salt thereof in combination with a crystalline vanadium-phosphorus-manganese containing compound.

专利号:US-9777027-B2
优先权日:2013-10-25
标 题 :Method for the synthesis of ethane-1-hydroxy-1,1-diphosphonic acid
发明人：NOTTÉ PATRICK PIERRE; COGELS SAMUEL
权利人:STRAITMARK HOLDING AG
摘要:The present invention is related to a method for the synthesis of ethane-1-hydroxy-1,1-diphosphonic acid or its salt which includes the steps of reacting tetraphosphorus hexaoxide and acetic acid under controlled reaction conditions; hydrolyzing the formed ethane-1-hydroxy-1,1-diphosphonic acid condensates to form ethane-1-hydroxy-1,1-diphosphonic acid; further processing the ethane-1-hydroxy-1,1-diphosphonic acid solution. The process according to the method of the present invention is highly controllable and further is characterized by a high selectivity.

专利号:US-6603003-B2
优先权日:2000-11-07
标 题 :Method for the preparation of piperazine and its derivatives
发明人：SEBASTIAN SONNY; PATEL HETAL VIRENDRA; THENNATI RAJAMANNAR
权利人:SUN PHARMACEUTICAL IND LTD
摘要:A novel method for the synthesis of piperazine and its derivatives of formula 1,wherein R is selected from hydrogen, or a lower alkyl group having 1 to 6 carbon atoms or a phenylalkyl group the alkyl of which has 1 to 4 carbon atoms;R1 is selected from hydrogen, a methyl group, a phenyl group optionally substituted with an alkyl group having 1 to 6 carbon atoms, or a phenylalkyl group the alkyl of which has 1 to 4 carbon atoms; andR2 is selected from hydrogen, or a methyl group, or a fluoromethyl group;comprising the steps:a. reacting an ester of formula 11 with substituted or unsubstituted ethylenediamine of formula 7 to give 3,4-dehydropiperazine-2-one and its derivatives of formula 12, wherein R, R1, R2 are as defined above and R6 is a C1 to C4 linear or branched alkyl group; andb. reacting the 3,4-dehydro-piperazine-2-one and its derivatives of formula 12 with a reducing agent to yield the piperazine and its derivatives of formula 1.

专利号:US-4447639-A
优先权日:1982-08-06
标题:Oxidative carbonylation of alcohols to dialkyl oxalates using a heterogeneous iron promoted Pd-V-P catalyst
发明人：SOFRANKO JOHN A; GAFFNEY ANNE M
权利人:ATLANTIC RICHFIELD CO
摘要:Synthesis of dialkyl oxalates by the heterogeneous catalyzed oxidative carbonylation of liquid monohydric saturated alcohols of from 1 to 20 carbon atoms with carbon monoxide and oxygen or an oxygen-containing gas in the presence of a catalytic amount of a catalyst comprising palladium or a salt thereof in combination with a crystalline vanadium-phosphorus-iron containing compound.

专利号:US-4447638-A
优先权日:1982-08-02
标 题 :Preparation of dialkyl oxalates by the oxidative carbonylation of alcohols with a heterogeneous Pd-V-P-Ti containing catalyst system
发明人：GAFFNEY ANNE M; SOFRANKO JOHN A
权利人:ATLANTIC RICHFIELD CO
摘要:Synthesis of dialkyl oxalates by the heterogeneous catalyzed oxidative carbonylation of liquid monohydric saturated alcohols of from 1 to 20 carbon atoms with carbon monoxide and oxygen or an oxygen-containing gas in the presence of a catalytic amount of a catalyst comprising palladium or a salt thereof in combination with a crystalline vanadium-phosphorus-titanium containing compound.

专利号:US-4454342-A
优先权日:1982-07-13
标 题 :Preparation of dialkyl oxalates using a heterogeneous Pd-V-P catalyst for the oxidative carbonylation of alcohols
发明人：GAFFNEY ANNE M; SOFRANKO JOHN A
权利人:ATLANTIC RICHFIELD CO
摘要:Synthesis of dialkyl oxalates by the heterogeneous catalyzed oxidative carbonylation of liquid monohydric saturated alcohols of from 1 to 20 carbon atoms with carbon monoxide and oxygen or an oxygen-containing gas in the presence of a catalytic amount of a catalyst comprising palladium or a salt thereof in combination with a single phase crystalline vanadium-phosphorus containing compound consisting of vanadium in an oxide form and an oxide of phosphorus.