KR970027046A - Method for preparing 2-amino-3, 5-dibromo benzaldehyde - Google Patents

Method for preparing 2-amino-3, 5-dibromo benzaldehyde Download PDF

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Publication number
KR970027046A
KR970027046A KR1019950043694A KR19950043694A KR970027046A KR 970027046 A KR970027046 A KR 970027046A KR 1019950043694 A KR1019950043694 A KR 1019950043694A KR 19950043694 A KR19950043694 A KR 19950043694A KR 970027046 A KR970027046 A KR 970027046A
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South Korea
Prior art keywords
carbonate
weight ratio
glycol
formula
benzhydrazide
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KR1019950043694A
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Korean (ko)
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KR0169558B1 (en
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황은영
이상협
백충훈
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김용구
주식회사 한 화
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Priority to KR1019950043694A priority Critical patent/KR0169558B1/en
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C223/00—Compounds containing amino and —CHO groups bound to the same carbon skeleton
    • C07C223/06—Compounds containing amino and —CHO groups bound to the same carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton

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

Abstract

본 발명은 하기 식(Ⅰ)로 표시되는 2-아미노-3, 5-디브로모 벤즈알데히드를 공업적으로 용이하게 제조할 수 있는 방법에 관한 것으로, 좀더 상세하게는 2개의 히드록시기를 갖는 탄소수 C2~C4의 글리콜, 탄소수 C1~C4의 알코올 및 물로 이루어진 군으로부터 선택된 둘 또는 그 이상의 혼합용매 존재하에서 하기 식(Ⅱ)로 표시되는 벤즈하이드라자이드 화합물과 탄산염 및 수산화염을 60-90℃의 온도범위에서 1~15시간 동안 반응시켜 하기 식(Ⅰ)로 표시되는 2-아미노-3, 5-디브로모 벤즈알데히드를 제조하는 방법에 관한 것이다.The present invention relates to a method that can be easily produced industrially 2-amino-3, 5-dibromo benzaldehyde represented by the following formula (I), more specifically, to a carbon number having two hydroxyl groups C 2 ~ C 4 of the glycol, the number of carbon atoms C 1 ~ C 4 alcohol and water of two selected from the group consisting of or to more under a mixed solvent of 60 to 90 present the benzamide hydrazide compound and the carbonate and hydroxyl flame of the formula (ⅱ) It relates to a method for producing 2-amino-3, 5-dibromo benzaldehyde represented by the following formula (I) by reacting for 1 to 15 hours at a temperature range of ℃.

Description

2-아미노-3, 5-디브로모 벤즈알데히드의 제조방법Method for preparing 2-amino-3, 5-dibromo benzaldehyde

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (11)

2개의 히드록시기를 갖는 탄소수 C2~C4의 글리콜, 탄소수 C1~C4의 알코올 및 물로 이루어진 군으로부터 선택된 둘 또는 그 이상의 혼합용매 존재하에서 하기 식(Ⅱ)로 표시되는 벤즈하이드라자이드 화합물과 탄산염 및 수산화염을 60-90℃의 온도범위에서 1~15시간 동안 반응시키는 것을 특징으로 하는 하기 식(Ⅰ)로 표시되는 2-아미노-3, 5-디브로모 벤즈알데히드의 제조방법.A benzhydrazide compound represented by the following formula (II) in the presence of two or more mixed solvents selected from the group consisting of C 2 -C 4 glycols, C 1 -C 4 alcohols and water having two hydroxyl groups; Method for producing 2-amino-3, 5-dibromo benzaldehyde represented by the following formula (I), characterized in that the carbonate and hydroxide are reacted for 1 to 15 hours at a temperature range of 60-90 ℃. 제1항에 있어서, 상기 2개의 히드로시기를 갖는 C2~C4의 글리콜이 에틸렌글리콜, 프로필렌글리콜, 부틸렌글리콜 또는 디에틸렌글리콜임을 특징으로 하는 방법.The method of claim 1, wherein the C 2 to C 4 glycol having two hydro groups is ethylene glycol, propylene glycol, butylene glycol or diethylene glycol. 제1항에 있어서, 상기 탄소수 C1~C4의 알코올이 메탄올, 에탄올, 프로판올 및 부탄올임을 특징으로 하는 방법.The method of claim 1, wherein the C 1 -C 4 alcohols are methanol, ethanol, propanol and butanol. 제1항에 있어서, 상기 혼합용매가 에틸렌글리콜, 메탄올, 및 물임을 특징으로 하는 방법.The method of claim 1, wherein the mixed solvent is ethylene glycol, methanol, and water. 제4항에 있어서, 상기 혼합용매가 에틸렌글리콜 기준으로 메탄올 0~0.3배(중량비), 물 0~0.5배(중량비)로 이루어진 것을 특징으로 하는 방법.The method of claim 4, wherein the mixed solvent comprises methanol 0 to 0.3 times (weight ratio) and water 0 to 0.5 times (weight ratio) based on ethylene glycol. 제1항 또는 제4항에 있어서, 상기 혼합용매의 사용량이 상기 식(Ⅱ)로 표시되는 벤즈하이드라자이드 화합물 기준으로 3~8배(중량비)임을 특징으로 하는 방법.The method according to claim 1 or 4, wherein the amount of the mixed solvent is 3 to 8 times (weight ratio) based on the benzhydrazide compound represented by the formula (II). 제1항에 있어서, 상기 반응시간이 3~9시간임을 특징으로 하는 방법.The method of claim 1, wherein the reaction time is 3 to 9 hours. 제1항에 있어서, 상기 탄산염이 탄산칼륨, 탄산나트륨, 탄산수소칼륨, 또는 탄산수소나트륨임을 특징으로 하는 방법.The method of claim 1 wherein the carbonate is potassium carbonate, sodium carbonate, potassium hydrogen carbonate, or sodium hydrogen carbonate. 제1항 또는 제8항에 있어서, 상기 탄산염의 사용량이 상기 식(Ⅱ)로 표시되는 벤즈하이드라자이드 화합물 기준으로 0.3~1배(중량비)임을 특징으로 하는 방법.The method according to claim 1 or 8, wherein the amount of the carbonate used is 0.3 to 1 times (weight ratio) based on the benzhydrazide compound represented by the formula (II). 제1항에 있어서, 상기 수산화염이 수산화나트륨 또는 수산화칼륨임을 특징으로 하는 방법.The method of claim 1 wherein the hydroxide salt is sodium hydroxide or potassium hydroxide. 제1항 또는 제10항에 있어서, 상기 수산화염의 사용량이 상기 식(Ⅱ)로 표시되는 벤즈하이드라자이드 화합물 기준으로 0~0.05배(중량비)임을 특징으로 하는 방법.The method according to claim 1 or 10, wherein the amount of the hydroxide salt is 0 to 0.05 times (weight ratio) based on the benzhydrazide compound represented by the formula (II). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950043694A 1995-11-22 1995-11-22 Process for preparation of 2-amino-3,5-dibromobenzaldehyde KR0169558B1 (en)

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KR1019950043694A KR0169558B1 (en) 1995-11-22 1995-11-22 Process for preparation of 2-amino-3,5-dibromobenzaldehyde

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Application Number Priority Date Filing Date Title
KR1019950043694A KR0169558B1 (en) 1995-11-22 1995-11-22 Process for preparation of 2-amino-3,5-dibromobenzaldehyde

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KR970027046A true KR970027046A (en) 1997-06-24
KR0169558B1 KR0169558B1 (en) 1999-03-20

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KR100379637B1 (en) * 2000-12-20 2003-04-10 송현삼 Method for preparing 2-amino-3,5-dibromobenzaldehyde having high purity and yield

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