GB279857A - Process for the manufacture of decomposition compounds from condensation products of m-and p-cresol with acetone - Google Patents

Process for the manufacture of decomposition compounds from condensation products of m-and p-cresol with acetone

Info

Publication number
GB279857A
GB279857A GB28390/27A GB2839027A GB279857A GB 279857 A GB279857 A GB 279857A GB 28390/27 A GB28390/27 A GB 28390/27A GB 2839027 A GB2839027 A GB 2839027A GB 279857 A GB279857 A GB 279857A
Authority
GB
United Kingdom
Prior art keywords
cresol
acetone
condensation products
isopropylenephenol
frankonite
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
Application number
GB28390/27A
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.)
Schering Kahlbaum AG
Original Assignee
Schering Kahlbaum AG
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 Schering Kahlbaum AG filed Critical Schering Kahlbaum AG
Publication of GB279857A publication Critical patent/GB279857A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/50—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms
    • C07C37/52—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms by splitting polyaromatic compounds, e.g. polyphenolalkanes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
    • C07D307/79—Benzo [b] furans; Hydrogenated benzo [b] furans with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

279,857. Schering-Kahlbaum Akt.- Ges., (formerly Chemische Fabrik auf Actien vorm. E. Schering). Oct. 26, 1926, [Convention date]. Phenols; coumaranes. - Methylisopropylenephenols and dimethylcoumaranes are obtained by bringing the etheric condensation products of m- and p-cresol with acetone into contact with an inert porous material at elevated temperature, preferably at or about boiling temperature. The process may be effected under reduced pressure. Porous materials mentioned are bleaching earths, such as frankonite and tonsil, fuller's earth, diatomite, silica gel and charcoal ; their activity may be immersed by depositing thereon a metal of the nickel group or a compound thereof, e.g. nickel or its oxide. The products may be hydrogenated to thymol and menthol, as described, for example, in Specification 279,855. According to the examples the condensation product of mcresol and acetone is slowly distilled over frankonite heated to 320‹ C., or over nickelcoated silica gel heated to 300‹ C. and with exclusion of air, whereby a mixture of 3-methyl-6- isopropylenephenol and 3 : 6-dimethyleoumarane is produced; the condensation product of p-cresol and acetone under the same conditions yields 4- methyl-6-isopropylenephenol together with 3 : 5- dimethyleoumarane. Specifications 273,684 and 273,686 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) states that other ketone condensation products with m- and p-cresol behave similarly. This subject-matter does not appear in the Specification as accepted.
GB28390/27A 1926-10-26 1927-10-25 Process for the manufacture of decomposition compounds from condensation products of m-and p-cresol with acetone Expired GB279857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE279857X 1926-10-26

Publications (1)

Publication Number Publication Date
GB279857A true GB279857A (en) 1929-02-25

Family

ID=6028805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28390/27A Expired GB279857A (en) 1926-10-26 1927-10-25 Process for the manufacture of decomposition compounds from condensation products of m-and p-cresol with acetone

Country Status (1)

Country Link
GB (1) GB279857A (en)

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