KR940021540A - Method for preparing 2-hydrazino-4-methyl benzothiazole - Google Patents

Method for preparing 2-hydrazino-4-methyl benzothiazole Download PDF

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Publication number
KR940021540A
KR940021540A KR1019930004065A KR930004065A KR940021540A KR 940021540 A KR940021540 A KR 940021540A KR 1019930004065 A KR1019930004065 A KR 1019930004065A KR 930004065 A KR930004065 A KR 930004065A KR 940021540 A KR940021540 A KR 940021540A
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KR
South Korea
Prior art keywords
hydrazino
sulfuric acid
concentrated sulfuric
molar equivalents
preparing
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KR1019930004065A
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Korean (ko)
Inventor
정인배
이재철
최종권
Original Assignee
최근선
주식회사 럭키
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Priority to KR1019930004065A priority Critical patent/KR940021540A/en
Publication of KR940021540A publication Critical patent/KR940021540A/en

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Abstract

본 발명은 하기 구조식(Ⅲ)의 4-오르소토릴-3-세미카바지드를 진한 황산과 브롬화수소 수용액 중에서 교반시킴을 특징으로 하는 하기 구조식(Ⅰ)의 2-하이드라지노-4-메틸 벤조티아졸의 제조방법을 제공한다.The present invention provides 2-hydrazino-4-methyl benzo of the following structural formula (I), characterized in that 4-orthotoryl-3-semicarbazide of the structural formula Provided are methods for preparing thiazole.

Description

2-하이드라지노-4-메틸 벤조티아졸의 제조방법Method for preparing 2-hydrazino-4-methyl benzothiazole

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (4)

하기 구조식(Ⅲ)의 4-오르소토릴-3-세미카바지드를 진한 황산과 브롬화수소 수용액 중에서 반응시킴을 특징으로 하는 하기 구조식(Ⅰ)의 2-하이드라지노-4-메틸 벤조티아졸의 제조방법.4-hydrosotoryl-3-semicarbazide of formula (III) is reacted in concentrated sulfuric acid and aqueous hydrogen bromide solution of 2-hydrazino-4-methyl benzothiazole of formula (I) Manufacturing method. 제1항에 있어서, 진한 황산은 5몰 당량 내지 20몰당량을 사용하고, 브롬화수소는 0.05몰 당량 내지 0.5몰 당량을 사용하여 실온 내지 100℃에서 반응시킴을 특징으로 하는 방법.The method of claim 1, wherein the concentrated sulfuric acid is used at 5 to 20 molar equivalents, and hydrogen bromide is reacted at room temperature to 100 ° C using 0.05 to 0.5 molar equivalents. 제2항에 있어서, 진한 황산은 8몰 당량 사용하고, 브롬과수소는 0.25몰 당량 사용하여 60℃의 온도에서 반응시킴을 특징으로 하는 방법.The method according to claim 2, wherein the concentrated sulfuric acid is used in 8 molar equivalents and bromine and hydrogen are reacted at a temperature of 60 DEG C using 0.25 molar equivalents. 제1항 내지 3항중 어느 한 항에 있어서, 구조식(Ⅲ)의 화합물과 브롬화수소 수용액을 반응기에 먼저 투입한 후 진한 황산을 투입함을 특징으로 하는 방법.The method according to any one of claims 1 to 3, wherein the compound of formula (III) and the aqueous hydrogen bromide solution are first introduced into the reactor, followed by addition of concentrated sulfuric acid. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930004065A 1993-03-17 1993-03-17 Method for preparing 2-hydrazino-4-methyl benzothiazole KR940021540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930004065A KR940021540A (en) 1993-03-17 1993-03-17 Method for preparing 2-hydrazino-4-methyl benzothiazole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930004065A KR940021540A (en) 1993-03-17 1993-03-17 Method for preparing 2-hydrazino-4-methyl benzothiazole

Publications (1)

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KR940021540A true KR940021540A (en) 1994-10-19

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