ES2182739T3 - Obtencion de un 1-alcoxi- 2 - metil-1,3 -butadieno. - Google Patents

Obtencion de un 1-alcoxi- 2 - metil-1,3 -butadieno.

Info

Publication number
ES2182739T3
ES2182739T3 ES00101566T ES00101566T ES2182739T3 ES 2182739 T3 ES2182739 T3 ES 2182739T3 ES 00101566 T ES00101566 T ES 00101566T ES 00101566 T ES00101566 T ES 00101566T ES 2182739 T3 ES2182739 T3 ES 2182739T3
Authority
ES
Spain
Prior art keywords
methyl
butadiene
alcoxi
obtaining
trialkoxy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES00101566T
Other languages
English (en)
Inventor
Paul Nosberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Application granted granted Critical
Publication of ES2182739T3 publication Critical patent/ES2182739T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/48—Preparation of compounds having groups
    • C07C41/50—Preparation of compounds having groups by reactions producing groups
    • C07C41/54—Preparation of compounds having groups by reactions producing groups by addition of compounds to unsaturated carbon-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01—Preparation of ethers
    • C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
    • C07C41/28—Preparation of ethers by reactions not forming ether-oxygen bonds from acetals, e.g. by dealcoholysis
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
    • C07C45/515—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups the singly bound functional group being an acetalised, ketalised hemi-acetalised, or hemi-ketalised hydroxyl group
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/10—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with ester groups or with a carbon-halogen bond
    • C07C67/11—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with ester groups or with a carbon-halogen bond being mineral ester groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Hydrogenated Pyridines (AREA)
  • Catalysts (AREA)

Abstract

Procedimiento para la desalcoxilación catalítica de un 1, 1, 3-trialcoxi-2-metil-butano de la fórmula general CH3-CH(OR1)-CH(CH3)-CH(OR1)2 VI en la que R1 significa alquilo C1-C4, para obtener el correspondiente 1-alcoxi-2-metil-1, 3-butadieno de la fórmula general H2C=CH-C(CH3)=CH-OR1 II en fase gaseosa, caracterizado porque como catalizador se utiliza un silicato de aluminio ligeramente ácido, cuya superficie específica se sitúa entre 5 y 50 m2/g.
ES00101566T 1996-08-19 1997-08-14 Obtencion de un 1-alcoxi- 2 - metil-1,3 -butadieno. Expired - Lifetime ES2182739T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96113248 1996-08-19

Publications (1)

Publication Number Publication Date
ES2182739T3 true ES2182739T3 (es) 2003-03-16

Family

ID=8223119

Family Applications (2)

Application Number Title Priority Date Filing Date
ES97114056T Expired - Lifetime ES2166939T3 (es) 1996-08-19 1997-08-14 Preparacion de un aldehido de gamma-halogentiglina.
ES00101566T Expired - Lifetime ES2182739T3 (es) 1996-08-19 1997-08-14 Obtencion de un 1-alcoxi- 2 - metil-1,3 -butadieno.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES97114056T Expired - Lifetime ES2166939T3 (es) 1996-08-19 1997-08-14 Preparacion de un aldehido de gamma-halogentiglina.

Country Status (10)

Country Link
US (3) US5786518A (es)
EP (2) EP0825168B1 (es)
JP (1) JPH1087546A (es)
CN (2) CN1305826C (es)
AT (2) ATE209173T1 (es)
BR (1) BR9704387A (es)
DE (2) DE59708581D1 (es)
DK (2) DK0825168T3 (es)
ES (2) ES2166939T3 (es)
ID (1) ID18021A (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6441263B1 (en) 2000-07-07 2002-08-27 Chevrontexaco Corporation Ethylene manufacture by use of molecular redistribution on feedstock C3-5 components
US20060161076A1 (en) * 2005-01-06 2006-07-20 Diamics, Inc. Systems and methods for collection of cell clusters
US20060189893A1 (en) * 2005-01-06 2006-08-24 Diamics, Inc. Systems and methods for detecting abnormal cells
WO2009137084A2 (en) * 2008-05-07 2009-11-12 Ivax Research, Llc Processes for preparation of taxanes and intermediates thereof
CN103172504B (zh) * 2011-12-26 2014-10-08 南京工业大学 2,7-二甲基-2,4,6-辛三烯-1,8-二醛的合成方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2165962A (en) * 1936-10-29 1939-07-11 Ig Farbenindustrie Ag Production of alkylidene diethers or ether-esters
JPS56113736A (en) * 1980-02-14 1981-09-07 Ota Seiyaku Kk Preparation of 2-arylalkanoic acid
US4288635A (en) * 1980-05-23 1981-09-08 J. T. Baker Chemical Co. Method for the preparation of (E)-4-bromo-2-methylbut-2-en-1-al
DE3535128A1 (de) * 1985-10-02 1987-04-02 Degussa Katalytische dealkoxylierung von geminalen di-alkoxyverbindungen, geeignete katalysatoren und deren herstellung

Also Published As

Publication number Publication date
CN1305826C (zh) 2007-03-21
EP0825168A2 (de) 1998-02-25
EP0825168B1 (de) 2001-11-21
CN1127467C (zh) 2003-11-12
DK1004565T3 (da) 2003-02-24
DE59705454D1 (de) 2002-01-03
EP0825168A3 (de) 1998-04-22
DK0825168T3 (da) 2002-05-21
EP1004565A1 (de) 2000-05-31
ATE209173T1 (de) 2001-12-15
CN1178783A (zh) 1998-04-15
US5786518A (en) 1998-07-28
DE59708581D1 (de) 2002-11-28
US5990360A (en) 1999-11-23
ES2166939T3 (es) 2002-05-01
US6018075A (en) 2000-01-25
ID18021A (id) 1998-02-19
ATE226569T1 (de) 2002-11-15
JPH1087546A (ja) 1998-04-07
BR9704387A (pt) 1999-05-11
CN1495151A (zh) 2004-05-12
EP1004565B1 (de) 2002-10-23

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