CAS: 32634-66-5; Di-P-Toluoyl-L-Tartaric Acid

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CAS号87-69-4 酒石酸 | CAS号874-60-2 对甲基苯甲酰氯 | CAS号869749-09-7 (R)-α-(2,3-dime... | CAS号72842-25-2 di-(4-toluoyl)-... | CAS号32634-68-7 D-(+)-二对甲基苯甲酰酒石酸

Alkaline Earth Salt Of/the/ Methylsulfuric Acid置于水,丙酮体系中,化学反应生成 二对甲苯酰基-L-酒石酸
参考文献:氢氟酸化物和异硫氰酸盐的最适反应性.(4. Mitteilungübermutterkornalkaloide)
标题:氢氟酸化物和异硫氰酸盐的最适反应性.(4. Mitteilungübermutterkornalkaloide)
摘要:
DOI:10.1002/hlca.19430260324

专利信息

专利号:US-5840915-A
优先权日:1990-01-22
标题:Process for the enatioselective synthesis of intermediates used
发明人：LEE THOMAS BING KIN; WONG GEORGE SEUNG-KIT
权利人:HOECHST MARION ROUSSEL INC
摘要:A process for the stereoselective synthesis of [R]- and [S]-2,3-dihydro-1,3-dimethyl-2-oxo-1H-indole-3-acetonitriles comprises reacting racemic and 5-alkoxy-substituted (+/-)-1,3-dimethyloxindoles with a halogenated acetonitrile in the presence of a substituted N-benzyl cinchoninium, quinidinium, cinchonidinium, or quininium catalyst. The resulting alkylated oxindoles can be converted to primary amines by catalytic reduction in the presence of hydrogen gas. One of the primary amines, such as enantiomers of 3-(2-aminoethyl)-1,3-dihydro-1,3-dimethyl-5-methoxy-2H-indol-2-one, can be enriched by contact with a chiral tartaric acid in an amount sufficient to preferentially precipitate a salt of the chiral acid and one of the enantiomers. The product can be used in the synthesis of stereospecific forms of physostigmine and related compounds having pharmaceutical activity.

专利号:EP-2607355-A1
优先权日:2011-12-23
标 题:Synthesis of triazolopyrimidine compounds
权利人:LEK PHARMACEUTICALS
摘要:The present invention relates to the field of organic synthesis and describes the synthesis of specific intermediates suitable for the preparation of triazolopyrimidine compounds such as ticagrelor.

专利号:US-5274117-A
优先权日:1990-01-22
标 题:Process for the enantioselective synthesis of intermediates used in the preparation of physostigmine
发明人：LEE THOMAS BING KIN DR; WONG GEORGE S K
权利人:HOECHST ROUSSEL PHARMA
摘要:A process for the stereoselective synthesis of [R]- and [S]-2,3-dihydro-1,3-dimethyl-2-oxo-1H-indole-3-acetonitriles comprises reacting racemic and 5-alkoxy-substituted (+/-)-1,3-dimethyloxindoles with a halogenated acetonitrile in the presence of a substituted N-benzyl cinchoninium, quinidinium, cinchonidinium, or quininium catalyst. The resulting alkylated oxindoles can be converted to primary amines by catalytic reduction in the presence of hydrogen gas. One of the primary amines, such as enantiomers of 3-(2-aminoethyl)-1,3-dihydro-1,3-dimethyl-5-methoxy-2H-indol-2-one, can be enriched by contact with a chiral tartaric acid in an amount sufficient to preferentially precipitate a salt of the chiral acid and one of the enantiomers. The product can be used in the synthesis of stereospecific forms of physostigmine and related compounds having pharmaceutical activity.

专利号:EP-2666771-A1
优先权日:2012-05-24
标题 :Synthesis of Aminocyclopentanetriol Derivatives
发明人：STERK DAMJAN; CASAR ZDENKO
权利人:LEK PHARMACEUTICALS
摘要:The present invention relates to the field of organic synthesis and describes the synthesis of specific intermediates suitable for the preparation of triazolopyrimidine compounds such as ticagrelor. nThe present invention provides in particular a process for the preparation of a compound of formula Vn ncomprising: na) providing a compound of formula IVn n, and nb) reducing the compound of formula IV with activated zinc in the presence of copper to give the compound of formula V.

专利号:US-9278972-B2
优先权日:2011-12-23
标题 :Synthesis of triazolopyrimidine compounds
发明人：MARAS NENAD; GAZIC SMILOVIC IVANA; STERK DAMJAN
权利人:LEK PHARMACEUTICALS
摘要:The present invention relates to the field of organic synthesis and describes the synthesis of specific intermediates suitable for the preparation of triazolopyrimidine compounds such as ticagrelor.

专利号:EP-0438796-B1
优先权日:1990-01-22
标题:Process for the enantioselection synthesis of alkylated oxindoles used as intermediates in the preparation of physostigmine
发明人：LEE THOMAS BING KIN DR; WONG GEORGE S K
权利人:HOECHST MARION ROUSSEL INC
摘要:A process for the stereoselective synthesis of [R]- and [S]-2,3-dihydro-1,3-dimethyl-2-oxo-1H-indole-3-acetonitriles comprises reacting racemic and 5-alkoxy-substituted (+/-)-1,3-dimethyloxindoles with a halogenated acetonitrile in the presence of a substituted N-benzyl cinchoninium, quinidinium, cinchonidinium, or quininium catalyst. The resulting alkylated oxindoles can be converted to primary amines by catalytic reduction in the presence of hydrogen gas. One of the primary amines, such as enantiomers of 3-(2-aminoethyl)-1,3-dihydro-1,3-dimethyl-5-methoxy-2H-indol-2-one, can be enriched by contact with a chiral tartaric acid in an amount sufficient to preferentially precipitate a salt of the chiral acid and one of the enantiomers. The product can be used in the synthesis of stereospecific forms of physostigmine and related compounds having pharmaceutical activity.