JPS55153775A - Synthetic method of benzoxazoles - Google Patents
Synthetic method of benzoxazolesInfo
- Publication number
- JPS55153775A JPS55153775A JP6072679A JP6072679A JPS55153775A JP S55153775 A JPS55153775 A JP S55153775A JP 6072679 A JP6072679 A JP 6072679A JP 6072679 A JP6072679 A JP 6072679A JP S55153775 A JPS55153775 A JP S55153775A
- Authority
- JP
- Japan
- Prior art keywords
- oxime
- formula
- hydroxylamine
- alkyl
- hydrogen chloride
- 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
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
PURPOSE: An oxime that is readily obtained from a ketone and hydroxylamine are heated together with hydrogen chloride in acetice acid to produce readily title compound useful as intermediate of medicine and chemicals for photography with simple operations in high yield.
CONSTITUTION: An oxime of formula I (R1 is alkyl; R2 is halogen, hydroxyl, acyloxy, alkyl, alkoxy, nitro, cyano, carboxyl, phenyl; n is 0W4) such as 2,4'- dihydroxyacetophenone oxime is dissolved in acetic acid and hydrogen chloride gas is introduced into the solution to produce a benzoxazole derivative of formula II such as 2-methyl-6-hydroxybenzoxazole. The compound of formula I is obtained by the reaction of the corresponding ketone with hydroxylamine. This process also can be applied to the case where a 2,5-dihydroxyacetophenone derivative is used as a starting material.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6072679A JPS55153775A (en) | 1979-05-17 | 1979-05-17 | Synthetic method of benzoxazoles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6072679A JPS55153775A (en) | 1979-05-17 | 1979-05-17 | Synthetic method of benzoxazoles |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55153775A true JPS55153775A (en) | 1980-11-29 |
Family
ID=13150563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6072679A Pending JPS55153775A (en) | 1979-05-17 | 1979-05-17 | Synthetic method of benzoxazoles |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55153775A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4743595A (en) * | 1984-06-14 | 1988-05-10 | Fuji Photo Film Co., Ltd. | Process for preparing 2-amino-5-nitrophenol derivatives |
-
1979
- 1979-05-17 JP JP6072679A patent/JPS55153775A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4743595A (en) * | 1984-06-14 | 1988-05-10 | Fuji Photo Film Co., Ltd. | Process for preparing 2-amino-5-nitrophenol derivatives |
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