GB1331664A - Preparation of hydroxybenzaldehyde and derivatives thereof - Google Patents

Preparation of hydroxybenzaldehyde and derivatives thereof

Info

Publication number
GB1331664A
GB1331664A GB1331664DA GB1331664A GB 1331664 A GB1331664 A GB 1331664A GB 1331664D A GB1331664D A GB 1331664DA GB 1331664 A GB1331664 A GB 1331664A
Authority
GB
United Kingdom
Prior art keywords
hydroxybenzaldehydes
formula
alkyl
hydroxybenzaldehyde
derivatives
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
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB1331664A publication Critical patent/GB1331664A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
    • C07C45/512—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups the singly bound functional group being a free hydroxyl group

Abstract

1331664 Hydroxybenzaldehydes SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 10 May 1972 [28 Sept 1971] 45110/71 Heading C2C Hydroxybenzaldehydes of the formula wherein R<SP>1</SP> is H, a monovalent cation, or alkyl group, R is a halogen atom, OH, alkyl or alkoxy group, and n is 0, 1 or 2; are obtained by reacting a compound of the formula with a base in the presence of a polar aprotic organic liquid having a dielectric constant of at least 20 at 25‹ C. and containing no hydrogen atoms in the molecules thereof which are capable of forming hydrogen bonds with negatively charged species. Preferred bases are hydrides, alkoxides or carbonates of alkali metals or alkaline earth metals. Specified solvents are dimethylformamide, dimethylacetamide, dimethyl sulphoxide, tetramethyl urea, hexamethyl phosphoramide and tetramethylenesulphone. Examples are given for the production of the compounds.
GB1331664D 1971-09-28 1971-09-28 Preparation of hydroxybenzaldehyde and derivatives thereof Expired GB1331664A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4511071 1971-09-28

Publications (1)

Publication Number Publication Date
GB1331664A true GB1331664A (en) 1973-09-26

Family

ID=10435926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1331664D Expired GB1331664A (en) 1971-09-28 1971-09-28 Preparation of hydroxybenzaldehyde and derivatives thereof

Country Status (2)

Country Link
BE (1) BE805255A (en)
GB (1) GB1331664A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2733002A1 (en) * 1976-07-23 1978-02-02 Shell Int Research Process for the preparation of organic acids and their esters
EP0120966A1 (en) * 1982-09-21 1984-10-10 MITSUI TOATSU CHEMICALS, Inc. Process for preparing benzophenone derivatives
US5457239A (en) * 1994-05-25 1995-10-10 Union Camp Corporation Process for formylation of aromatic compounds

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2733002A1 (en) * 1976-07-23 1978-02-02 Shell Int Research Process for the preparation of organic acids and their esters
EP0120966A1 (en) * 1982-09-21 1984-10-10 MITSUI TOATSU CHEMICALS, Inc. Process for preparing benzophenone derivatives
EP0120966A4 (en) * 1982-09-21 1985-04-03 Mitsui Toatsu Chemicals Process for preparing benzophenone derivatives.
US5457239A (en) * 1994-05-25 1995-10-10 Union Camp Corporation Process for formylation of aromatic compounds

Also Published As

Publication number Publication date
BE805255A (en) 1974-03-25

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee