CAS: 4744-10-9; Propionaldehydediethylacetal

上下游产品

CAS号67-56-1 甲醇 | CAS号123-38-6 丙醛 | CAS号57-55-6 丙二醇 | CAS号116-11-0 2-甲氧基丙烯 | CAS号149-73-5 原甲酸三甲酯 | CAS号108-03-2 1-硝基丙烷 | CAS号681-84-5 原硅酸四甲酯 | CAS号301-00-8 亚麻酸甲酯 | CAS号64-17-5 乙醇 | CAS号127248-84-4 propionaldehyde... | CAS号33170-72-8 2-溴-1,1-二甲氧基丙烷 | CAS号19967-57-8 2-溴丙醛 | CAS号37031-29-1 (-)-二甲基-2,3-邻异丙... | CAS号362-75-4 2',3'-异丙叉腺苷 | CAS号823-36-9 2-乙基-1,3-环戊二酮 | CAS号106-70-7 己酸甲酯 | CAS号87894-32-4 2-氯-1,1-二甲氧基丙烷 | CAS号7319-16-6 甲基 1-丙烯基醚 | CAS号52079-23-9 (S)-(-)-alpha-羟... | CAS号67-56-1 甲醇

📜2-甲氧基丙烯置于2-乙基-己酸稀土盐体系中,化学反应生成 1,1-二甲氧基丙烷
参考文献:Process For The Production Of Isopropenyl Methyl Ether
标题:Process For The Production Of Isopropenyl Methyl Ether
摘要:生产不饱和醚,特别是异丙烯基甲基醚(ipm)的方法,通过热解含有缩酮或醛缩合物的混合物,特别是二甲氧基丙烷(dmp),在液相中在有机羧酸的存在下,根据以下反应方案:1其中r1等于h或具有1-8个碳原子的烷基;r2等于h,Ch3-,C2H5-,或cl-;r3等于具有1-8个碳原子的烷基;r4等于h,Ch3-,C2H5-,或c3H7-,并且r1和r4可以连接形成5,6或7元环.dmp是通过将丙酮和甲醇在酸性非均相离子交换剂中反应的过程生产的,产物通过用碱性水溶液萃取来分离.特别是该过程涉及将ipm反应产物与dmp反应产物结合,这允许执行稳定的循环过程,其中ipm和dmp阶段的含甲醇流可以同时被萃取.产物可以通过简单地从含有ipm,Dmp和丙酮的混合物中蒸馏ipm的过程来分离.

专利信息

专利号:US-9012625-B2
优先权日:2009-04-07
标 题 :Method for the synthesis of a trisaccharide
发明人：DÉKANY GYULA; Ã?GOSTON KÃ?ROLY; BAJZA ISTVAN; BOUTET JULIEN; BØJSTRUP MARIE; FANEFJORD METTE; PÉREZ FIGUEROA IGNACIO; HEDEROS MARKUS; HORVATH FERENC; KOVÃ?CS-PÉNZES PIROSKA; KRÖGER LARS; OLSSON JOHAN; RÖHRIG CHRISTOPH; SCHROVEN ANDREAS; VRASIDAS IOANNIS
权利人:DÉKANY GYULA; Ã?GOSTON KÃ?ROLY; BAJZA ISTVAN; BOUTET JULIEN; BØJSTRUP MARIE; FANEFJORD METTE; PÉREZ FIGUEROA IGNACIO; HEDEROS MARKUS; HORVATH FERENC; KOVÃ?CS-PÉNZES PIROSKA; KRÖGER LARS; OLSSON JOHAN; RÖHRIG CHRISTOPH; SCHROVEN ANDREAS; VRASIDAS IOANNIS; GLYCOM AS
摘要:The present invention relates to an improved synthesis of a trisaccharide of the formula (1), novel intermediates used in the synthesis and the preparation of the intermediates.

专利号:US-7202370-B2
优先权日:2003-10-27
标 题 :Semi-synthesis of taxane intermediates from 9-dihydro-13-acetylbaccatin III
发明人：NAIDU RAGINA
权利人:CONOR MEDSYSTEMS INC
摘要:A method is provided for the semi-synthesis of taxane intermediates useful in the preparation of paclitaxel and docetaxel from 9-dihydro-13-acetylbaccatin III. The preparation of a suitably protected baccatin III backbone from 9-dihydro-13-acetylbaccatin III, and the insertion of the phenylisoserine side chain onto the protected baccatin III from 9-dihydro-13-acetylbaccatin III to form the taxane derivatives, paclitaxel and docetaxel is disclosed.

专利号:US-4769497-A
优先权日:1986-07-04
标题:Process for the synthesis of 2,2-dialkoxy-propanes
发明人：MESSINA GIUSEPPE; MORETTI MARIO D; SANNA GAVINO; SANNA SALVATORE R; SOMA GIOVANNI
权利人:ENICHEM ANIC SPA
摘要:A new method of synthesis of a 2,2-dialkoxy-propane e.g. 2,2-dimethoxy-propane, is described through reaction of a cyclic ketal, e.g. 2,2-dimethyl-(1,3)-dioxolane, with a boric acid alkyl ester, e.g. boric acid trimethyl ester, in the presence of an acidic catalyst. The reaction may be carried out either in liquid or in vapour phase. In the latter case, heating of the thus obtained intermediate mixture to the reflux temperature should follow the catalytic step.

专利号:US-9102698-B2
优先权日:2007-03-14
标 题:Process for the synthesis of IB-MECA
发明人：BRUZINSKI PAUL; LIU XUEJUN; GIBB CAMERON; HERNANDEZ-ABAD PEDRO E
权利人:BRUZINSKI PAUL; LIU XUEJUN; GIBB CAMERON; HERNANDEZ-ABAD PEDRO E; CAN FITE BIOPHARMA LTD
摘要:The present disclosure provides a method for the synthesis of IB-MECA. More specifically, the present disclosure provides a simple and high yield method for Good Manufacturing Production (GMP) of IB-MECA. The method involves the reaction of 6-halopurine-9-riboside with a diol protecting reagent; oxidation of the primary alcohol in the diol protected 6-halopurine-9-riboside with a diol protecting reagent; oxidation of the primary alcohol in the diol protected 6-halopurine; reaction of the diol protected 6-halopurine with a nucleophile (e.g. methylamine); substitution of the halogen group with iodobenzylamine and removal of the diol protecting group.

专利号:US-4861892-A
优先权日:1988-02-12
标题:Method for synthesis of deoxymannojirimycin
发明人：FLEET GEORGE W J
权利人:SEARLE & CO
摘要:A method is disclosed for the chemical synthesis of 1,5-dideoxy-1,5-imino-D-mannitol or 1,5-dideoxy-1,5-imino-L-mannitol from, respectively, 2,3-O-isopropylidene-L-gulono-γ-lactone or 2,3-O-isopropylidene-D-gulono-γ-lactone which comprises carrying out interconversion between the L-gulono and D-mannono forms or between the D-gulono and L-mannono forms, respectively, and connecting of C-1 to C-5 by nitrogen.

专利号:US-6201101-B1
优先权日:1998-11-19
标 题:Catalyst and its use for the synthesis of polyol polyethers
发明人：TOZZOLA GABRIELLA; PO' RICCARDO; CARDI NICOLETTA
权利人:ENICHEM SPA
摘要:The present invention relates to a catalyst having general formula (I):wherein: M represents at least one cation of an element selected from earth-alkaline metals belonging to groups IIA, IIIA, VA, or transition metals belonging to groups IIB, IIIB, VB or VIIIB; n represents an integer between 0 and 2 and x is an integer between 2 and 5.The invention also relates to a process for the synthesis of polyol polyethers which uses a catalyst having general formula (I).