GB527396A - Process for the manufacture of condensation products from trimethyl-hydroquinone andalkylene halides - Google Patents
Process for the manufacture of condensation products from trimethyl-hydroquinone andalkylene halidesInfo
- Publication number
- GB527396A GB527396A GB10973/39A GB1097339A GB527396A GB 527396 A GB527396 A GB 527396A GB 10973/39 A GB10973/39 A GB 10973/39A GB 1097339 A GB1097339 A GB 1097339A GB 527396 A GB527396 A GB 527396A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formula
- bromide
- hydroquinone
- trimethyl
- halides
- 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.)
- Expired
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
527,396. Vitamins. HOFFMAN-LA ROCHE & CO., AKT.-GES., F. April 11, 1939, No. 10973. Convention date, April 12, 1938. Samples furnished. [Class 2 (iii)] Compounds corresponding to the general formulae are prepared by condensing trimethylhydroquinone with alkylene halides, other than phytyl halides, of the general formula X CH 2 - CH =CR<SP>1</SP>R<SP>11</SP>, in which X stands for halogen, and R<SP>1</SP> and R<SP>11</SP> for hydrogen or alkyl or alkyline groups in an indifferent solvent in the presence of acid condensing agents. If R<SP>1</SP> and R<SP>11</SP> represent hydrogen, a compound of formula I is obtained. If R<SP>1</SP> and R<SP>11</SP> represent alkyl or alkylene groups, compounds of formula II are obtained. Zinc chloride or aluminium chloride may be used as condensing agents. The products are useful medicinally. In the examples (1) trimethyl-hydroquinone condensed with geramyl bromide in the presence of anhydrous zinc chloride yields a compound of the formula It is purified by transformation into its allophanate ; (2) trimethyl-hydroquinone is condensed with alkyl bromide in the presence of anhydrous zinc chloride yielding 2.4.6.7.- tetramethyl-5-oxy-cumarane of the formula The samples furnished under Sect. 2 (5) of the Acts comprise (1) the allophanate of the compound from trimethylhydroquinone and geramyl bromide, obtained according to example 1 , (2) 2.4.6.7-tetramethyl-5-oxy-cumarane obtained in accordance with example (2) ; (3) 2.5.7.8-tetramethyl-6-oxy-chromane prepared by condensing crotyl bromide with trimethylhydroquinone.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH527396X | 1938-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB527396A true GB527396A (en) | 1940-10-08 |
Family
ID=4518271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10973/39A Expired GB527396A (en) | 1938-04-12 | 1939-04-11 | Process for the manufacture of condensation products from trimethyl-hydroquinone andalkylene halides |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB527396A (en) |
-
1939
- 1939-04-11 GB GB10973/39A patent/GB527396A/en not_active Expired
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