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FR2259822A1 - Cpds. contg. chroman rings - from hydroquinones and carboxylic acid derivs in the presence of an insol solid acid catalyst - Google Patents

Cpds. contg. chroman rings - from hydroquinones and carboxylic acid derivs in the presence of an insol solid acid catalyst

Info

Publication number
FR2259822A1
FR2259822A1 FR7403943A FR7403943A FR2259822A1 FR 2259822 A1 FR2259822 A1 FR 2259822A1 FR 7403943 A FR7403943 A FR 7403943A FR 7403943 A FR7403943 A FR 7403943A FR 2259822 A1 FR2259822 A1 FR 2259822A1
Authority
FR
France
Prior art keywords
insol
contg
carboxylic acid
hydroquinones
cpds
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
FR7403943A
Other languages
French (fr)
Other versions
FR2259822B1 (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.)
Teijin Ltd
Original Assignee
Teijin Ltd
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 Teijin Ltd filed Critical Teijin Ltd
Priority to FR7403943A priority Critical patent/FR2259822A1/en
Publication of FR2259822A1 publication Critical patent/FR2259822A1/en
Application granted granted Critical
Publication of FR2259822B1 publication Critical patent/FR2259822B1/fr
Granted legal-status Critical Current

Links

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)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In the title reaction a cpd. (I) is reacted with a cpd. (II) (III) or (IV) in the presence of a solid acid which contains an acid whose strength Ho (Hammett) is 1.5, insol in the reaction system. (where R1 and R2 are H or 1-20C org. carboxylic acid radicals, R3 R4 and R5 are H or Me; X and X1 are each different and all halogen, or 1-20C- org. carboxylic acid radicals; Y is H or 1-20C satd. or unsatd. hydrocarbyl). The acid catalyst is pref. silica/alumina of specific surface area of >=1 m2/g pref. 100 m2/g contg. is not 0.25 m mole/g acid of Ho 1.5.
FR7403943A 1974-02-06 1974-02-06 Cpds. contg. chroman rings - from hydroquinones and carboxylic acid derivs in the presence of an insol solid acid catalyst Granted FR2259822A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7403943A FR2259822A1 (en) 1974-02-06 1974-02-06 Cpds. contg. chroman rings - from hydroquinones and carboxylic acid derivs in the presence of an insol solid acid catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7403943A FR2259822A1 (en) 1974-02-06 1974-02-06 Cpds. contg. chroman rings - from hydroquinones and carboxylic acid derivs in the presence of an insol solid acid catalyst

Publications (2)

Publication Number Publication Date
FR2259822A1 true FR2259822A1 (en) 1975-08-29
FR2259822B1 FR2259822B1 (en) 1978-01-06

Family

ID=9134553

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7403943A Granted FR2259822A1 (en) 1974-02-06 1974-02-06 Cpds. contg. chroman rings - from hydroquinones and carboxylic acid derivs in the presence of an insol solid acid catalyst

Country Status (1)

Country Link
FR (1) FR2259822A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0304842A2 (en) * 1987-08-25 1989-03-01 Nisshin Flour Milling Co., Ltd. Isoprenoid derivatives and anti-ulcer agents containing the same
EP0924208A1 (en) * 1997-12-20 1999-06-23 Degussa Aktiengesellschaft Process for the preparation fo alpha-Tocopherol esters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0304842A2 (en) * 1987-08-25 1989-03-01 Nisshin Flour Milling Co., Ltd. Isoprenoid derivatives and anti-ulcer agents containing the same
US4906669A (en) * 1987-08-25 1990-03-06 Nisshin Flour Milling Co., Ltd. Isoprenoid derivatives and anti-ulcer agents containing the same
EP0304842A3 (en) * 1987-08-25 1991-01-16 Nisshin Flour Milling Co., Ltd. Isoprenoid derivatives and anti-ulcer agents containing the same
EP0924208A1 (en) * 1997-12-20 1999-06-23 Degussa Aktiengesellschaft Process for the preparation fo alpha-Tocopherol esters
US6048988A (en) * 1997-12-20 2000-04-11 Degussa-Huls Ag Process for the production of α-tocopherol esters

Also Published As

Publication number Publication date
FR2259822B1 (en) 1978-01-06

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Legal Events

Date Code Title Description
ST Notification of lapse