FR2241521A1 - Prodn. of (+)-cis-2,8-p-menthadiene-1-ol - by isomerisation of 2 -carene oxide using meta-titanic acid catalyst - Google Patents

Prodn. of (+)-cis-2,8-p-menthadiene-1-ol - by isomerisation of 2 -carene oxide using meta-titanic acid catalyst

Info

Publication number
FR2241521A1
FR2241521A1 FR7330575A FR7330575A FR2241521A1 FR 2241521 A1 FR2241521 A1 FR 2241521A1 FR 7330575 A FR7330575 A FR 7330575A FR 7330575 A FR7330575 A FR 7330575A FR 2241521 A1 FR2241521 A1 FR 2241521A1
Authority
FR
France
Prior art keywords
cis
menthadiene
isomerisation
prodn
meta
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.)
Granted
Application number
FR7330575A
Other languages
French (fr)
Other versions
FR2241521B3 (en
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.)
SCM Corp
Original Assignee
SCM Corp
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 SCM Corp filed Critical SCM Corp
Priority to FR7330575A priority Critical patent/FR2241521A1/en
Publication of FR2241521A1 publication Critical patent/FR2241521A1/en
Application granted granted Critical
Publication of FR2241521B3 publication Critical patent/FR2241521B3/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C35/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring
    • C07C35/02—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic
    • C07C35/08—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic containing a six-membered rings
    • C07C35/12—Menthol

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

2-carene oxide (i) is converted into a product contg. >=75% by wt. (+)-cis-2,8-p-menthadiene-1-ol (ii) by contacting (i) with 0.2-10% by wt. metatitanic acid at 25-200 degrees C. The crude cis-isolimonenol-1-ol (ii) formed is easily separated from any by-products, and can be converted to levo-menthol, an active perfumery and flavouring component.
FR7330575A 1973-08-23 1973-08-23 Prodn. of (+)-cis-2,8-p-menthadiene-1-ol - by isomerisation of 2 -carene oxide using meta-titanic acid catalyst Granted FR2241521A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7330575A FR2241521A1 (en) 1973-08-23 1973-08-23 Prodn. of (+)-cis-2,8-p-menthadiene-1-ol - by isomerisation of 2 -carene oxide using meta-titanic acid catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7330575A FR2241521A1 (en) 1973-08-23 1973-08-23 Prodn. of (+)-cis-2,8-p-menthadiene-1-ol - by isomerisation of 2 -carene oxide using meta-titanic acid catalyst

Publications (2)

Publication Number Publication Date
FR2241521A1 true FR2241521A1 (en) 1975-03-21
FR2241521B3 FR2241521B3 (en) 1976-07-30

Family

ID=9124242

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7330575A Granted FR2241521A1 (en) 1973-08-23 1973-08-23 Prodn. of (+)-cis-2,8-p-menthadiene-1-ol - by isomerisation of 2 -carene oxide using meta-titanic acid catalyst

Country Status (1)

Country Link
FR (1) FR2241521A1 (en)

Also Published As

Publication number Publication date
FR2241521B3 (en) 1976-07-30

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