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ES408273A1 - Process for the preparation of 4-chloro-2,5-dimethoxyaniline - Google Patents

Process for the preparation of 4-chloro-2,5-dimethoxyaniline

Info

Publication number
ES408273A1
ES408273A1 ES408273A ES408273A ES408273A1 ES 408273 A1 ES408273 A1 ES 408273A1 ES 408273 A ES408273 A ES 408273A ES 408273 A ES408273 A ES 408273A ES 408273 A1 ES408273 A1 ES 408273A1
Authority
ES
Spain
Prior art keywords
chloro
preparation
reduction
dimethoxyaniline
catalytic
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
ES408273A
Other languages
Spanish (es)
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
Farbwerke 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
Application filed by Farbwerke Hoechst AG filed Critical Farbwerke Hoechst AG
Publication of ES408273A1 publication Critical patent/ES408273A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C213/02—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions involving the formation of amino groups from compounds containing hydroxy groups or etherified or esterified hydroxy groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/20—Sulfiding

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)

Abstract

Procedure for the preparation of 4-chloro-2,5-dimethoxy-aniline by catalytic reduction with hydrogen of the nitrated compound in liquid phase at elevated temperature and pressure, characterized in that the reduction is carried out in the presence of a platinum catalyst on sulphided or sulphited carbon with the addition of catalytic amounts of buffer substances, which in aqueous solution give rise to a pH value of 8 to 10. (Machine-translation by Google Translate, not legally binding)
ES408273A 1971-11-11 1972-11-04 Process for the preparation of 4-chloro-2,5-dimethoxyaniline Expired ES408273A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2156051A DE2156051C3 (en) 1971-11-11 1971-11-11 Process for the preparation of 4-chloro-2,5-dimethoxy-aniline

Publications (1)

Publication Number Publication Date
ES408273A1 true ES408273A1 (en) 1975-11-16

Family

ID=5824830

Family Applications (1)

Application Number Title Priority Date Filing Date
ES408273A Expired ES408273A1 (en) 1971-11-11 1972-11-04 Process for the preparation of 4-chloro-2,5-dimethoxyaniline

Country Status (20)

Country Link
JP (1) JPS5644060B2 (en)
AT (1) AT331210B (en)
AU (1) AU474209B2 (en)
BE (1) BE791300A (en)
CA (1) CA995248A (en)
CH (1) CH575377A5 (en)
CS (1) CS173610B2 (en)
DD (1) DD99356A5 (en)
DE (1) DE2156051C3 (en)
ES (1) ES408273A1 (en)
FR (1) FR2160166A5 (en)
GB (1) GB1393428A (en)
HU (1) HU165205B (en)
IL (1) IL40777A (en)
IT (1) IT970356B (en)
NL (1) NL7214964A (en)
PL (1) PL85137B1 (en)
RO (1) RO62342A (en)
SU (1) SU474135A3 (en)
ZA (1) ZA727738B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2455704C3 (en) * 1974-11-25 1978-06-08 Hoechst Ag, 6000 Frankfurt Process for the preparation of 4-chloro-23-dimethoxy aniline
CA1148562A (en) * 1979-02-22 1983-06-21 Alfred J. Bird Catalyst for the hydrogenation of halogen substituted aromatic nitro compounds
JPS58159957U (en) * 1982-04-19 1983-10-25 日本発条株式会社 Headrest upper and lower adjustment mechanism
DE3821013A1 (en) * 1988-06-22 1989-12-28 Hoechst Ag METHOD FOR PRODUCING 4-CHLORINE-2,5-DIMETHOXYANILINE

Also Published As

Publication number Publication date
DE2156051B2 (en) 1974-03-28
PL85137B1 (en) 1976-04-30
CA995248A (en) 1976-08-17
CH575377A5 (en) 1976-05-14
ZA727738B (en) 1973-09-26
CS173610B2 (en) 1977-02-28
AU4858372A (en) 1974-05-09
AT331210B (en) 1976-08-10
GB1393428A (en) 1975-05-07
ATA952372A (en) 1975-11-15
DE2156051C3 (en) 1974-10-31
BE791300A (en) 1973-05-14
IL40777A0 (en) 1973-01-30
FR2160166A5 (en) 1973-06-22
AU474209B2 (en) 1976-07-15
JPS4857938A (en) 1973-08-14
NL7214964A (en) 1973-05-15
DE2156051A1 (en) 1973-05-17
RO62342A (en) 1977-08-15
HU165205B (en) 1974-07-27
DD99356A5 (en) 1973-08-05
SU474135A3 (en) 1975-06-14
IT970356B (en) 1974-04-10
IL40777A (en) 1976-04-30
JPS5644060B2 (en) 1981-10-16

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