IT1034599B - Procedimento per la preparazione di 4 idrossi 3.5 dibromo benzal deide - Google Patents

Procedimento per la preparazione di 4 idrossi 3.5 dibromo benzal deide

Info

Publication number
IT1034599B
IT1034599B IT21600/75A IT2160075A IT1034599B IT 1034599 B IT1034599 B IT 1034599B IT 21600/75 A IT21600/75 A IT 21600/75A IT 2160075 A IT2160075 A IT 2160075A IT 1034599 B IT1034599 B IT 1034599B
Authority
IT
Italy
Prior art keywords
hydroxes
deide
benzal
dibromo
procedure
Prior art date
Application number
IT21600/75A
Other languages
English (en)
Original Assignee
Ciba Geigy
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 CH410574A external-priority patent/CH591411A5/de
Application filed by Ciba Geigy filed Critical Ciba Geigy
Application granted granted Critical
Publication of IT1034599B publication Critical patent/IT1034599B/it

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
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/80—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
    • 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
    • C07C37/62—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by introduction of halogen; by substitution of halogen atoms by other halogen atoms
    • 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
    • C07C45/42—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis
    • C07C45/43—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis of >CX2 groups, X being halogen
    • 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
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
IT21600/75A 1974-03-25 1975-03-24 Procedimento per la preparazione di 4 idrossi 3.5 dibromo benzal deide IT1034599B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH410574A CH591411A5 (en) 1974-03-25 1974-03-25 4-Hydroxy-3,5-dibromobenzaldehyde prodn - from p-cresol by sequential ring- and side-chain bromination then hydrolysis
CH22875 1975-01-09

Publications (1)

Publication Number Publication Date
IT1034599B true IT1034599B (it) 1979-10-10

Family

ID=25683946

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21600/75A IT1034599B (it) 1974-03-25 1975-03-24 Procedimento per la preparazione di 4 idrossi 3.5 dibromo benzal deide

Country Status (8)

Country Link
US (1) US3996291A (it)
JP (1) JPS584011B2 (it)
CA (1) CA1049560A (it)
DE (1) DE2512614C2 (it)
FR (1) FR2265711B1 (it)
GB (1) GB1499372A (it)
IT (1) IT1034599B (it)
NL (1) NL7503563A (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377713A (en) * 1977-09-26 1983-03-22 Ethyl Corporation Chemical process for preparing 3-phenoxybenzyl chloride
US4326089A (en) * 1977-09-26 1982-04-20 Ethyl Corporation Thermal process for preparing 3-phenoxybenzyl bromide
JPS5822089B2 (ja) * 1978-01-25 1983-05-06 住友化学工業株式会社 ｍ↓−（Ｐ↓−ブロモフェノキシ）ベンズアルデヒドの製造法
DE2849692B2 (de) * 1978-11-16 1980-09-25 Hoechst Ag, 6000 Frankfurt Verfahren zur Herstellung von p-tert-Butylbenzaldehyd und dessen am Kern durch Halogen monosubstituierten Derivaten
JPS5690031A (en) * 1979-12-21 1981-07-21 Sumitomo Chem Co Ltd Preparation of aromatic aldehyde
US4284830A (en) * 1980-02-01 1981-08-18 Phillips Petroleum Co. Monohalogenation of substituted phenol
DE3332780A1 (de) * 1983-09-10 1985-03-28 Hoechst Ag, 6230 Frankfurt 6-sulfoxyphenolderivate, ihre herstellung und ihre verwendung als cytoprotekiva
JPS61166549A (ja) * 1985-01-18 1986-07-28 Somar Corp 遮光性マスキングフイルム
JPS623685A (ja) * 1985-06-28 1987-01-09 Nippon Kokan Kk <Nkk> 管の溶接位置検出装置
JPS6316887U (it) * 1986-07-18 1988-02-04
KR100379637B1 (ko) * 2000-12-20 2003-04-10 송현삼 고순도, 고수율의 2-아미노-3,5-디브로모벤즈알데히드의제조방법
CN105111056B (zh) * 2015-09-28 2017-06-27 浙江汇能生物股份有限公司 一种甲氧苄啶中间体3,5‑二溴‑4‑羟基苯甲醛的制备方法
CN107954841B (zh) * 2017-11-24 2020-09-01 天津大学 一种3，5-二溴-4-羟基苯甲醛的制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1270333A (fr) * 1960-10-13 1961-08-25 Bayer Ag Procédé de préparation de phénol bromé sur le noyan
US3641158A (en) * 1969-03-10 1972-02-08 Tenneco Chem Process for the production of aromatic hydroxyaldehydes

Also Published As

Publication number Publication date
FR2265711B1 (it) 1977-04-15
CA1049560A (en) 1979-02-27
NL7503563A (nl) 1975-09-29
JPS50130735A (it) 1975-10-16
JPS584011B2 (ja) 1983-01-24
GB1499372A (en) 1978-02-01
US3996291A (en) 1976-12-07
FR2265711A1 (it) 1975-10-24
DE2512614A1 (de) 1975-10-02
DE2512614C2 (de) 1984-02-23

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