RU93058510A - Способ получения 3,4-дигидрокси-5-нитробензальдегида - Google Patents

Способ получения 3,4-дигидрокси-5-нитробензальдегида

Info

Publication number
RU93058510A
RU93058510A RU93058510/04A RU93058510A RU93058510A RU 93058510 A RU93058510 A RU 93058510A RU 93058510/04 A RU93058510/04 A RU 93058510/04A RU 93058510 A RU93058510 A RU 93058510A RU 93058510 A RU93058510 A RU 93058510A
Authority
RU
Russia
Prior art keywords
nitrobenzaldehyde
dihydroxy
producing
reacting
reaction
Prior art date
Application number
RU93058510/04A
Other languages
English (en)
Other versions
RU2098405C1 (ru
Inventor
Хонканен Эркки
Линдхольм Стиг
Original Assignee
Орион-Ихтюмя Ой
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 GB919113431A external-priority patent/GB9113431D0/en
Application filed by Орион-Ихтюмя Ой filed Critical Орион-Ихтюмя Ой
Publication of RU93058510A publication Critical patent/RU93058510A/ru
Application granted granted Critical
Publication of RU2098405C1 publication Critical patent/RU2098405C1/ru

Links

Claims (1)

  1. Способ получения 3,4-дигидрокси-5-нитробензальдегида путем взаимодействия 4-гидрокси-3-метокси-5-нитробензальдегида с сильным нуклеофильным агентом, который можно получить посредством взаимодействия ароматического меркаптосоединения с сильным органическим или неорганическим основанием щелочного металла, таким как гидроксид лития. Реакцию проводят при повышенных температурах, используя апротонный полярный растворитель. Предпочтительно проводить реакцию в инертной атмосфере.
RU9393058510A 1991-06-20 1992-06-18 Способ получения 3,4-дигидрокси-5-нитробензальдегида RU2098405C1 (ru)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB919113431A GB9113431D0 (en) 1991-06-20 1991-06-20 Method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde
GB9113431.2 1991-06-20
PCT/FI1992/000192 WO1993000323A1 (en) 1991-06-20 1992-06-18 Method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde

Publications (2)

Publication Number Publication Date
RU93058510A true RU93058510A (ru) 1996-12-27
RU2098405C1 RU2098405C1 (ru) 1997-12-10

Family

ID=10697088

Family Applications (1)

Application Number Title Priority Date Filing Date
RU9393058510A RU2098405C1 (ru) 1991-06-20 1992-06-18 Способ получения 3,4-дигидрокси-5-нитробензальдегида

Country Status (23)

Country Link
US (1) US5382699A (ru)
EP (1) EP0589948B1 (ru)
JP (1) JP3048639B2 (ru)
KR (1) KR100241132B1 (ru)
AT (1) ATE142192T1 (ru)
AU (1) AU650149B2 (ru)
BG (1) BG62163B1 (ru)
CA (1) CA2110583C (ru)
CZ (1) CZ281933B6 (ru)
DE (1) DE69213452T2 (ru)
DK (1) DK0589948T3 (ru)
EE (1) EE03068B1 (ru)
ES (1) ES2091472T3 (ru)
FI (1) FI104715B (ru)
GB (1) GB9113431D0 (ru)
GR (1) GR3021052T3 (ru)
HU (1) HU211121B (ru)
NO (1) NO178298C (ru)
PL (1) PL169522B1 (ru)
RO (1) RO115157B1 (ru)
RU (1) RU2098405C1 (ru)
SK (1) SK281800B6 (ru)
WO (1) WO1993000323A1 (ru)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9419274D0 (en) * 1994-09-23 1994-11-09 Orion Yhtymae Oy New method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde
US7339060B2 (en) 2005-03-23 2008-03-04 Resolution Chemicals, Ltd. Preparation of cabergoline
US20070197576A1 (en) * 2006-02-08 2007-08-23 Resolution Chemicals Limited Production of Cabergoline and Novel Polymorphic Form Thereof
EP2251323B1 (en) 2009-05-14 2014-04-23 F.I.S.- Fabbrica Italiana Sintetici S.p.A. Method for the purification of entacapone

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL279980A (ru) * 1961-06-21
US4009210A (en) * 1975-05-07 1977-02-22 Gulf Oil Corporation Process for manufacturing 3,5-ditert.butyl-4-hydroxybenzaldehyde by formylation of 2,6-ditert.butylphenol
DK175069B1 (da) * 1986-03-11 2004-05-24 Hoffmann La Roche Pyrocatecholderivater
YU213587A (en) * 1986-11-28 1989-06-30 Orion Yhtymae Oy Process for obtaining new pharmacologic active cateholic derivatives
FI864875A0 (fi) * 1986-11-28 1986-11-28 Orion Yhtymae Oy Nya farmakologiskt aktiva foereningar, dessa innehaollande kompositioner samt foerfarande och mellanprodukter foer anvaendning vid framstaellning av dessa.
GB2238047B (en) * 1989-11-03 1993-02-10 Orion Yhtymae Oy Stable polymorphic form of (e)-n,n-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide and the process for its preparation

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