FR1571706A - - Google Patents

Info

Publication number: FR1571706A
Authority: FR; France
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

Application number

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.)

1967-07-12

Filing date

1968-06-21

Publication date

1969-06-20

1968-06-21 Application filed filed Critical

1969-06-20 Application granted granted Critical

1969-06-20 Publication of FR1571706A publication Critical patent/FR1571706A/fr

Status Expired legal-status Critical Current

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
- C07D311/70—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with two hydrocarbon radicals attached in position 2 and elements other than carbon and hydrogen in position 6
- C07D311/72—3,4-Dihydro derivatives having in position 2 at least one methyl radical and in position 6 one oxygen atom, e.g. tocopherols

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Pyrane Compounds (AREA)

FR1571706D 1967-07-12 1968-06-21 Expired FR1571706A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US65291267A	1967-07-12	1967-07-12

Publications (1)

Publication Number	Publication Date
FR1571706A true FR1571706A (fr)	1969-06-20

Family

ID=24618708

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1571706D Expired FR1571706A (fr)	1967-07-12	1968-06-21

Country Status (4)

Country	Link
US (1)	US3444213A (fr)
CH (1)	CH507231A (fr)
FR (1)	FR1571706A (fr)
GB (1)	GB1176790A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4191692A (en) *	1976-02-20	1980-03-04	Basf Aktiengesellschaft	Manufacture of tocopherol
US4217285A (en) *	1976-09-29	1980-08-12	Nisshin Flour Milling Co., Ltd.	Process for the preparation of Dl-α-tocopherol of high purity
DE3010504A1 (de) *	1980-03-19	1981-10-01	Basf Ag, 6700 Ludwigshafen	Verfahren zur herstellung von 2-hydroxyalkylchromanen
DE4243464A1 (de) *	1992-12-22	1994-06-23	Basf Ag	Verfahren zur Herstellung von alpha-Tocopherol und alpha-Tocopherylacetat in flüssigem oder überkritischem Kohlendioxid
US5663376A (en) †	1994-07-27	1997-09-02	Eisai Co., Ltd.	Process for the preparation of α-tocopherol
ES2191078T3 (es) *	1996-01-05	2003-09-01	Hoffmann La Roche	Procedimiento de obtencion de d,1-alfa-tocoferol en presencia de un catalizador de acido perfluoroalquilensulfonico.
CA2288851A1 (fr)	1998-11-11	2000-05-11	F. Hoffmann-La Roche Ag	Procede de fabrication de d,1-alpha-tocopherol
ATE298330T1 (de)	2000-11-22	2005-07-15	Basf Ag	Verfahren zur kontinuierlichen acylierung von chromanolesterderivaten

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2411967A (en) *	1938-03-31	1946-12-03	Hoffmann La Roche	Dl-tocopherols and process for the manufacture of same
US2411969A (en) *	1938-03-31	1946-12-03	Hoffmann La Roche	Process for the preparation of synthetic dl-tocopherols
US2230659A (en) *	1938-09-28	1941-02-04	Merck & Co Inc	Process of synthesizing alphatocopherol
US2345605A (en) *	1938-12-06	1944-04-04	Merck & Co Inc	Chromanes and process for their production

1967
- 1967-07-12 US US652912A patent/US3444213A/en not_active Expired - Lifetime
1968
- 1968-06-21 FR FR1571706D patent/FR1571706A/fr not_active Expired
- 1968-07-11 GB GB33018/68A patent/GB1176790A/en not_active Expired
- 1968-07-11 CH CH1039768A patent/CH507231A/de not_active IP Right Cessation

Also Published As

Publication number	Publication date
GB1176790A (en)	1970-01-07
US3444213A (en)	1969-05-13
CH507231A (de)	1971-05-15

Publication	Publication Date	Title
AU425114B2 (fr)	1972-06-14
AT298283B (fr)	1972-03-15
FR1571706A (fr)	1969-06-20
AU416737B2 (fr)	1971-09-03
AU2277767A (fr)	1968-12-12
AU342066A (fr)	1968-09-19
AU610966A (fr)	1968-11-28
AU3151267A (fr)	1968-01-08
AU2256867A (fr)	1968-12-05
AU2116667A (fr)	1969-04-03
AU2454867A (fr)	1969-01-16
AU3189468A (fr)	1969-07-10
AU2528767A (fr)	1970-01-08
AU2977667A (fr)	1969-05-22
BE477645A (fr)
BE609869A (fr)
AU25066A (fr)	1968-07-11
AU2406369A (fr)	1969-01-09
AU408412B2 (fr)	1970-11-23
AU1868267A (fr)	1968-09-12
AU1677166A (fr)	1968-07-25
AU459699A (fr)	1975-04-10
AU1614766A (fr)	1968-07-11
AU23366A (fr)	1968-07-11
AU97666A (fr)	1968-08-01

Legal Events

Date	Code	Title	Description
1976-08-13	ST	Notification of lapse