FR2381009A1 - Procede de preparation de l'alpha-naphtol - Google Patents

Procede de preparation de l'alpha-naphtol

Info

Publication number
FR2381009A1
FR2381009A1 FR7803764A FR7803764A FR2381009A1 FR 2381009 A1 FR2381009 A1 FR 2381009A1 FR 7803764 A FR7803764 A FR 7803764A FR 7803764 A FR7803764 A FR 7803764A FR 2381009 A1 FR2381009 A1 FR 2381009A1
Authority
FR
France
Prior art keywords
alpha
naphthol
ester
formula
preparation
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
FR7803764A
Other languages
English (en)
Other versions
FR2381009B1 (fr
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.)
BASF SE
Original Assignee
BASF SE
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 DE19772706682 external-priority patent/DE2706682A1/de
Priority claimed from DE19772747956 external-priority patent/DE2747956A1/de
Application filed by BASF SE filed Critical BASF SE
Publication of FR2381009A1 publication Critical patent/FR2381009A1/fr
Application granted granted Critical
Publication of FR2381009B1 publication Critical patent/FR2381009B1/fr
Granted 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
    • C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
    • C07C37/055—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis the substituted group being bound to oxygen, e.g. ether group
    • C07C37/0555—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis the substituted group being bound to oxygen, e.g. ether group being esterified hydroxy groups

Landscapes

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

Abstract

Procédé pour préparer l'alpha-naphtol par saponification d'esters d'acides carboxyliques à l'aide de vapeur d'eau dans une colonne à distiller en présence d'un acide. On envoie dans la colonne, à contre-courant, un ester alphanaphtylique d'acide aliphatique carboxylique répondant à la formule I, dans laquelle R représente un atome d'hydrogène ou un reste aliphatique, et un acide organique sulfonique, par le haut, et de vapeur d'eau par le bas, et on fait réagir à une température de 100 à 170 degrés C avec des proportions relatives de 0,9 à 1,5 mole d'eau par mole d'ester alpha-nathtylique de formule I. L'alpha-naphtol a des applications industrielles nombreuses et bien connues; c'est notamment une matière première précieuse pour la préparation de colorants, de produits pharmaceutiques et d'insecticides.
FR7803764A 1977-02-17 1978-02-10 Procede de preparation de l'alpha-naphtol Granted FR2381009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19772706682 DE2706682A1 (de) 1977-02-17 1977-02-17 Verfahren zur herstellung von alpha-naphthol
DE19772747956 DE2747956A1 (de) 1977-10-26 1977-10-26 Verfahren zur herstellung von alpha-naphthol

Publications (2)

Publication Number Publication Date
FR2381009A1 true FR2381009A1 (fr) 1978-09-15
FR2381009B1 FR2381009B1 (fr) 1983-11-10

Family

ID=25771617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803764A Granted FR2381009A1 (fr) 1977-02-17 1978-02-10 Procede de preparation de l'alpha-naphtol

Country Status (3)

Country Link
CH (1) CH631955A5 (fr)
FR (1) FR2381009A1 (fr)
GB (1) GB1594280A (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE457521A (fr) *

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE457521A (fr) *

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/64 *

Also Published As

Publication number Publication date
CH631955A5 (en) 1982-09-15
FR2381009B1 (fr) 1983-11-10
GB1594280A (en) 1981-07-30

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Legal Events

Date Code Title Description
ST Notification of lapse