GB1446838A - Process for the preparation of 2-hydroxynaphthalene-1-aldehydes - Google Patents

Process for the preparation of 2-hydroxynaphthalene-1-aldehydes

Info

Publication number
GB1446838A
GB1446838A GB2276975A GB2276975A GB1446838A GB 1446838 A GB1446838 A GB 1446838A GB 2276975 A GB2276975 A GB 2276975A GB 2276975 A GB2276975 A GB 2276975A GB 1446838 A GB1446838 A GB 1446838A
Authority
GB
United Kingdom
Prior art keywords
hydroxynaphthalene
aldehydes
preparation
hydroxynaphthalenes
hexamethylenetetramine
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
GB2276975A
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.)
Hoechst AG
Original Assignee
Hoechst 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
Priority claimed from DE19742425430 external-priority patent/DE2425430C3/en
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of GB1446838A publication Critical patent/GB1446838A/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
    • C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
    • C07C45/562—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with nitrogen as the only hetero atom
    • C07C45/565—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with nitrogen as the only hetero atom by reaction with hexamethylene-tetramine

Landscapes

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

Abstract

2-Hydroxynaphthalene-1-aldehydes are prepared by reacting 2-hydroxynaphthalenes with hexamethylenetetramine and formaldehyde. The process is carried out in the presence of an aliphatic carboxylic acid and a mineral acid, while the amount of waste water is reduced. The 2-hydroxynaphthalene-1-aldehyde is isolated by filtration, and the mother liquor obtained is reused in the next batch.
GB2276975A 1974-05-25 1975-05-23 Process for the preparation of 2-hydroxynaphthalene-1-aldehydes Expired GB1446838A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742425430 DE2425430C3 (en) 1974-05-25 Process for the preparation of 2-hydroxynaphthalene-1-aldehydes

Publications (1)

Publication Number Publication Date
GB1446838A true GB1446838A (en) 1976-08-18

Family

ID=5916495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2276975A Expired GB1446838A (en) 1974-05-25 1975-05-23 Process for the preparation of 2-hydroxynaphthalene-1-aldehydes

Country Status (7)

Country Link
JP (1) JPS5821899B2 (en)
BE (1) BE829483A (en)
CH (1) CH616139A5 (en)
FR (1) FR2272066B1 (en)
GB (1) GB1446838A (en)
IT (1) IT1038445B (en)
NL (1) NL7505906A (en)

Also Published As

Publication number Publication date
FR2272066B1 (en) 1978-07-13
DE2425430B2 (en) 1976-05-20
CH616139A5 (en) 1980-03-14
NL7505906A (en) 1975-11-27
FR2272066A1 (en) 1975-12-19
BE829483A (en) 1975-11-26
IT1038445B (en) 1979-11-20
DE2425430A1 (en) 1975-11-27
JPS50160246A (en) 1975-12-25
JPS5821899B2 (en) 1983-05-04

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Legal Events

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

Effective date: 19940523