JPS552628A - Isomerization of piperitol - Google Patents

Isomerization of piperitol

Info

Publication number
JPS552628A
JPS552628A JP7476678A JP7476678A JPS552628A JP S552628 A JPS552628 A JP S552628A JP 7476678 A JP7476678 A JP 7476678A JP 7476678 A JP7476678 A JP 7476678A JP S552628 A JPS552628 A JP S552628A
Authority
JP
Japan
Prior art keywords
trans
piperitol
cis
catalyst
complex
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
JP7476678A
Other languages
Japanese (ja)
Other versions
JPS5735885B2 (en
Inventor
Hidenori Kumobayashi
Takanao Taketomi
Susumu Akutagawa
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.)
Takasago International Corp
Takasago Corp
Original Assignee
Takasago Perfumery Industry Co
Takasago 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 Takasago Perfumery Industry Co, Takasago Corp filed Critical Takasago Perfumery Industry Co
Priority to JP7476678A priority Critical patent/JPS552628A/en
Publication of JPS552628A publication Critical patent/JPS552628A/en
Publication of JPS5735885B2 publication Critical patent/JPS5735885B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

PURPOSE: To prepare a mixture of cis- and trans-piperitols, in a short time, by the catalystic isomerization of cis- or trans-piperitol using a specific Co-phosphine complex as an isomerication catalyst.
CONSTITUTION: Cis or trans-piperitol is treated for a short time, with a catalyst comprising a low-valency Co-complex coordinated with a phosphine ligand having a coordination number of 2, to afford a mixture of cis-and trans-piperitols. The catalyst can be prepared by reacting a low-valency Co-olefin complex [pref. bivalent Co salt or a bivalent Co chelate compound (e.g. Co-acetylacetonate, etc.)] with a phosphine ligand having a coordination number of 2, e.g. 1,1'-bis-(diphenylphosphino)ferrocene, etc., in an organic solvent.
USE: Trans-piperitol is a raw material of menthol.
COPYRIGHT: (C)1980,JPO&Japio
JP7476678A 1978-06-20 1978-06-20 Isomerization of piperitol Granted JPS552628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7476678A JPS552628A (en) 1978-06-20 1978-06-20 Isomerization of piperitol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7476678A JPS552628A (en) 1978-06-20 1978-06-20 Isomerization of piperitol

Publications (2)

Publication Number Publication Date
JPS552628A true JPS552628A (en) 1980-01-10
JPS5735885B2 JPS5735885B2 (en) 1982-07-31

Family

ID=13556722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7476678A Granted JPS552628A (en) 1978-06-20 1978-06-20 Isomerization of piperitol

Country Status (1)

Country Link
JP (1) JPS552628A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2368896B1 (en) * 2010-03-01 2016-08-24 ExxonMobil Chemical Patents Inc. Mono-indenyl transition metal compounds and polymerization therewith

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2368896B1 (en) * 2010-03-01 2016-08-24 ExxonMobil Chemical Patents Inc. Mono-indenyl transition metal compounds and polymerization therewith

Also Published As

Publication number Publication date
JPS5735885B2 (en) 1982-07-31

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