JPS552643A - Preparation of n-methyl-benzthiazolone derivative - Google Patents
Preparation of n-methyl-benzthiazolone derivativeInfo
- Publication number
- JPS552643A JPS552643A JP7511278A JP7511278A JPS552643A JP S552643 A JPS552643 A JP S552643A JP 7511278 A JP7511278 A JP 7511278A JP 7511278 A JP7511278 A JP 7511278A JP S552643 A JPS552643 A JP S552643A
- Authority
- JP
- Japan
- Prior art keywords
- tertiary amine
- solvent
- derivative
- diazabicyclo
- formula
- 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.)
- Granted
Links
Landscapes
- Thiazole And Isothizaole Compounds (AREA)
Abstract
PURPOSE: To prepare the title compound useful as pesticides and medicines readily and quantitatively under very mild conditions, by reanranging a 2-methoxybenzthiazolone derivative in the presence of a tertiary amine or its salt under heating.
CONSTITUTION: A 2-methoxybenzthiazole denivative of formula I: (R is H, halogen, or lower alkyl group) is reanranged in the presence of a tertiary amine, preferably a relatively strong base, e.g. an aliphatic tertiary amine, 1,5-diazabicyclo [3,4,0]nonene-5, or 1.5-diazabicyclo [5,4]undecene-5, or its salt, e.g. hydrochloride, hydrobromide, or sulfate, under heating to give the desired N-methylbenzthiazolone devivative of formula II. The reaction may be carried out at a temperature 5W10°C higher than the melting point of the objective compound in the absence of a solvent, and near the reflux temperature of the solvent in the presence of an organic solvent, e.g. a tertiary amine.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7511278A JPS552643A (en) | 1978-06-20 | 1978-06-20 | Preparation of n-methyl-benzthiazolone derivative |
US06/049,634 US4293702A (en) | 1978-06-19 | 1979-06-18 | Method for preparing 4-substituted-N-methylbenzothiazolone derivatives |
FR7915594A FR2429211A1 (en) | 1978-06-19 | 1979-06-18 | PROCESS FOR THE PRODUCTION OF N-METHYLBENZOTHIAZOLONE DERIVATIVES SUBSTITUTED IN POSITION 4 |
NL7904750A NL7904750A (en) | 1978-06-19 | 1979-06-18 | PROCESS FOR PREPARING N-ALKYL-BENZOTHIAZOL DERIVATIVES. |
GB7921150A GB2026475A (en) | 1978-06-19 | 1979-06-18 | Method of preparing n-alkyl benzothiazolone derivatives |
DE19792924712 DE2924712A1 (en) | 1978-06-19 | 1979-06-19 | PROCESS FOR THE PREPARATION OF N-ALKYLBENZOTHIAZOLONE DERIVATIVES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7511278A JPS552643A (en) | 1978-06-20 | 1978-06-20 | Preparation of n-methyl-benzthiazolone derivative |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS552643A true JPS552643A (en) | 1980-01-10 |
JPS6230189B2 JPS6230189B2 (en) | 1987-07-01 |
Family
ID=13566757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7511278A Granted JPS552643A (en) | 1978-06-19 | 1978-06-20 | Preparation of n-methyl-benzthiazolone derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS552643A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4521877A (en) * | 1982-02-02 | 1985-06-04 | Namiki Precision Jewel Co., Ltd. | Reproducing stylus and method of making same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0418399U (en) * | 1990-06-05 | 1992-02-17 |
-
1978
- 1978-06-20 JP JP7511278A patent/JPS552643A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4521877A (en) * | 1982-02-02 | 1985-06-04 | Namiki Precision Jewel Co., Ltd. | Reproducing stylus and method of making same |
Also Published As
Publication number | Publication date |
---|---|
JPS6230189B2 (en) | 1987-07-01 |
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