DK0496362T3 - Process for the preparation of malonic acid derivatives - Google Patents

Process for the preparation of malonic acid derivatives

Info

Publication number
DK0496362T3
DK0496362T3 DK92100948.6T DK92100948T DK0496362T3 DK 0496362 T3 DK0496362 T3 DK 0496362T3 DK 92100948 T DK92100948 T DK 92100948T DK 0496362 T3 DK0496362 T3 DK 0496362T3
Authority
DK
Denmark
Prior art keywords
preparation
acid derivatives
malonic acid
dioxanes
malonic anhydride
Prior art date
Application number
DK92100948.6T
Other languages
Danish (da)
Inventor
Colm Dr Omurchu
Original Assignee
Lonza 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 Lonza Ag filed Critical Lonza Ag
Application granted granted Critical
Publication of DK0496362T3 publication Critical patent/DK0496362T3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/04—1,3-Dioxanes; Hydrogenated 1,3-dioxanes
    • C07D319/06—1,3-Dioxanes; Hydrogenated 1,3-dioxanes not condensed with other rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

The invention relates to the use of malonic anhydride for the preparation of 2,2-disubstituted 4,6-dioxo-1,3-dioxanes and a method for preparing the dioxanes. The dioxanes are prepared by reacting, in the presence of a Lewis acid or a protic acid, malonic anhydride with a ketone of the formula R3C(O)R4, in which R3 and R4 denote alkyl or aryl groups or together form an unsubstituted or substituted cyclic system.
DK92100948.6T 1991-01-21 1992-01-21 Process for the preparation of malonic acid derivatives DK0496362T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH15791 1991-01-21
CH15691 1991-01-21

Publications (1)

Publication Number Publication Date
DK0496362T3 true DK0496362T3 (en) 1995-11-27

Family

ID=25683690

Family Applications (1)

Application Number Title Priority Date Filing Date
DK92100948.6T DK0496362T3 (en) 1991-01-21 1992-01-21 Process for the preparation of malonic acid derivatives

Country Status (4)

Country Link
EP (2) EP0496362B1 (en)
AT (1) ATE129229T1 (en)
DE (1) DE59204021D1 (en)
DK (1) DK0496362T3 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4360691A (en) * 1978-05-11 1982-11-23 The Regents Of The University Of California Production of malonic anhydrides and derivatives thereof

Also Published As

Publication number Publication date
EP0637581A1 (en) 1995-02-08
DE59204021D1 (en) 1995-11-23
EP0496362A2 (en) 1992-07-29
EP0496362A3 (en) 1992-12-23
EP0496362B1 (en) 1995-10-18
ATE129229T1 (en) 1995-11-15

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Legal Events

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AHS Application shelved for other reasons than non-payment