NL158774B - PROCESS FOR SEPARATING MIXTURES FROM D AND 1 ISOMERS OF MENTHOL, NEOMENTHOL AND ISOMENTHOL INTO THE OPTICALLY ACTIVE D AND 1 ISOMERS. - Google Patents

PROCESS FOR SEPARATING MIXTURES FROM D AND 1 ISOMERS OF MENTHOL, NEOMENTHOL AND ISOMENTHOL INTO THE OPTICALLY ACTIVE D AND 1 ISOMERS.

Info

Publication number
NL158774B
NL158774B NL7202520A NL7202520A NL158774B NL 158774 B NL158774 B NL 158774B NL 7202520 A NL7202520 A NL 7202520A NL 7202520 A NL7202520 A NL 7202520A NL 158774 B NL158774 B NL 158774B
Authority
NL
Netherlands
Prior art keywords
isomers
isomenthol
neomenthol
menthol
optically active
Prior art date
Application number
NL7202520A
Other languages
Dutch (nl)
Other versions
NL7202520A (en
NL158774C (en
Original Assignee
Haarmann & Reimer Gmbh
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
Priority claimed from DE19712109456 external-priority patent/DE2109456C3/en
Priority claimed from DE19722204771 external-priority patent/DE2204771C3/en
Application filed by Haarmann & Reimer Gmbh filed Critical Haarmann & Reimer Gmbh
Publication of NL7202520A publication Critical patent/NL7202520A/xx
Application granted granted Critical
Publication of NL158774B publication Critical patent/NL158774B/en
Publication of NL158774C publication Critical patent/NL158774C/xx

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
NL7202520A 1971-02-27 1972-02-25 PROCESS FOR SEPARATING MIXTURES FROM D AND 1 ISOMERS OF MENTHOL, NEOMENTHOL AND ISOMENTHOL INTO THE OPTICALLY ACTIVE D AND 1 ISOMERS. NL158774B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712109456 DE2109456C3 (en) 1971-02-27 Process for the separation of optically pure d- and I-menthol
DE19722204771 DE2204771C3 (en) 1972-02-02 1972-02-02 Process for the separation of optically pure d- and l-neo- or isomenthol

Publications (3)

Publication Number Publication Date
NL7202520A NL7202520A (en) 1972-08-29
NL158774B true NL158774B (en) 1978-12-15
NL158774C NL158774C (en) 1978-12-15

Family

ID=25760737

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7202520A NL158774B (en) 1971-02-27 1972-02-25 PROCESS FOR SEPARATING MIXTURES FROM D AND 1 ISOMERS OF MENTHOL, NEOMENTHOL AND ISOMENTHOL INTO THE OPTICALLY ACTIVE D AND 1 ISOMERS.

Country Status (10)

Country Link
JP (1) JPS523375B1 (en)
BE (1) BE779888A (en)
CA (1) CA976986A (en)
CH (1) CH560660A5 (en)
FR (1) FR2126445B1 (en)
GB (1) GB1369714A (en)
IT (1) IT951071B (en)
NL (1) NL158774B (en)
PL (1) PL85126B1 (en)
SU (1) SU432710A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2280681B (en) * 1993-08-06 1998-03-11 Merck Patent Gmbh Thermochromic media
CN111991834B (en) * 2020-09-08 2021-11-16 安徽银丰药业股份有限公司 Crystallization barrel is used in menthol processing
CN115057905B (en) * 2022-07-13 2023-09-08 中国科学院上海药物研究所 Eutectic crystal of L-menthol and cholesterol, preparation method and application thereof

Also Published As

Publication number Publication date
GB1369714A (en) 1974-10-09
FR2126445A1 (en) 1972-10-06
CH560660A5 (en) 1975-04-15
NL7202520A (en) 1972-08-29
SU432710A3 (en) 1974-06-15
JPS523375B1 (en) 1977-01-27
NL158774C (en) 1978-12-15
FR2126445B1 (en) 1976-07-23
CA976986A (en) 1975-10-28
BE779888A (en) 1972-08-25
IT951071B (en) 1973-06-30
PL85126B1 (en) 1976-04-30

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Legal Events

Date Code Title Description
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: HAARMANN

V4 Lapsed because of reaching the maxim lifetime of a patent