Global Patent Index - EP 0922025 A1

EP 0922025 A1 19990616 - NITROSATION METHOD OF A PHENOLIC COMPOSITION SUBSTITUTED BY AN ELECTRO-ATTRACTING GROUP AND USE THEREOF

Title (en)

NITROSATION METHOD OF A PHENOLIC COMPOSITION SUBSTITUTED BY AN ELECTRO-ATTRACTING GROUP AND USE THEREOF

Title (de)

VERFAHREN ZUR NITROSIERUNG EINER DURCH EINE ELEKTRONENANZIEHENDEN GRUPPE SUBSTITUIERTEN PHENOLVERBINDUNG UND IHRE VERWENDUNG

Title (fr)

PROCEDE DE NITROSATION D'UN COMPOSE PHENOLIQUE SUBSTITUE PAR UN GROUPEMEMT ELECTRO-ATTRACTEUR ET SON UTILISATION

Publication

EP 0922025 A1 19990616 (FR)

Application

EP 97933724 A 19970711

Priority

  • FR 9701292 W 19970711
  • FR 9608725 A 19960712

Abstract (en)

[origin: WO9802408A1] The invention concerns a method of nitrosation of a phenolic compound substituted by an electro-attracting group.The invention also concerns a method of nitration of a phenoic compound substituted by an electro-attracting group. The nitrosation method is characterised in that it consists in effecting the nitrosatio n of the said compound in presence of sulphuric acid; the concentration of the sulphuric acid being at least 60 % by weight, then optionally in effecting the separation of the resulting nitrosated compound. The invention also concerns the oxidation of the resulting p-nitrosated phenolic compound for obtaining the corresponding nitrated compound.

IPC 1-7

C07C 205/60; C07C 205/44; C07C 205/45; C07B 43/02; C07C 207/04

IPC 8 full level

B01J 31/02 (2006.01); C07B 43/02 (2006.01); C07B 61/00 (2006.01); C07C 201/00 (2006.01); C07C 201/10 (2006.01); C07C 205/22 (2006.01); C07C 205/44 (2006.01); C07C 205/45 (2006.01); C07C 205/60 (2006.01); C07C 207/04 (2006.01); C07C 227/04 (2006.01); C07C 227/06 (2006.01); C07C 229/64 (2006.01)

CPC (source: EP)

C07B 43/02 (2013.01); C07C 201/00 (2013.01); C07C 201/06 (2013.01)

Citation (search report)

See references of WO 9802408A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9802408 A1 19980122; AU 3697597 A 19980209; CA 2259931 A1 19980122; CN 1116273 C 20030730; CN 1262672 A 20000809; EP 0922025 A1 19990616; FR 2750986 A1 19980116; FR 2750986 B1 19981016; JP 2001508763 A 20010703; ZA 976212 B 19980323

DOCDB simple family (application)

FR 9701292 W 19970711; AU 3697597 A 19970711; CA 2259931 A 19970711; CN 97198055 A 19970711; EP 97933724 A 19970711; FR 9608725 A 19960712; JP 50568398 A 19970711; ZA 976212 A 19970714