JPS5612359A - Preparation of tetra-substituted urea derivative - Google Patents
Preparation of tetra-substituted urea derivativeInfo
- Publication number
- JPS5612359A JPS5612359A JP8644579A JP8644579A JPS5612359A JP S5612359 A JPS5612359 A JP S5612359A JP 8644579 A JP8644579 A JP 8644579A JP 8644579 A JP8644579 A JP 8644579A JP S5612359 A JPS5612359 A JP S5612359A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- compound shown
- hydrogen halide
- tetra
- urea derivative
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled compound in high yield economically through a method hardly causing side reactions, by reacting carboxylic acid amide of azole with a secondary amine in the presence of a catalytic amount of a hydrogen halide compoment.
CONSTITUTION: A compound shown by the formula I (R1 and R2 are hydrocarbon which may be substituted and may form a saturated ring; A1 and A2 are N or CH; Y is O or S) is reacted with a compound shown by the formula II (R3 and R4 are R1 or R2) to give a tetra-substituted urea derivative shown by the formula III. The reaction is carried out in the presence of a hydrogen halide (preferably a hydrogen halide salt of pyridine base) as a catalyst. Its amount is 1W0.01mol, preferably 1W0.1mol based on the compound shown by the formula II. Since side reactions scarcely occur, aftertreatment is done with ease. Azole prepared as a by- product can be reused for the synthesis of the compound shown by the formula I.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8644579A JPS5612359A (en) | 1979-07-10 | 1979-07-10 | Preparation of tetra-substituted urea derivative |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8644579A JPS5612359A (en) | 1979-07-10 | 1979-07-10 | Preparation of tetra-substituted urea derivative |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5612359A true JPS5612359A (en) | 1981-02-06 |
Family
ID=13887109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8644579A Pending JPS5612359A (en) | 1979-07-10 | 1979-07-10 | Preparation of tetra-substituted urea derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5612359A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7238688B2 (en) | 2001-03-13 | 2007-07-03 | Schering Corporation | Piperidine compounds |
CN102702029A (en) * | 2012-04-10 | 2012-10-03 | 重庆长风化学工业有限公司 | Preparation process for tetrabutyl urea |
-
1979
- 1979-07-10 JP JP8644579A patent/JPS5612359A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7238688B2 (en) | 2001-03-13 | 2007-07-03 | Schering Corporation | Piperidine compounds |
CN102702029A (en) * | 2012-04-10 | 2012-10-03 | 重庆长风化学工业有限公司 | Preparation process for tetrabutyl urea |
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