JPS6490191A - Photochromic compound and composition thereof - Google Patents
Photochromic compound and composition thereofInfo
- Publication number
- JPS6490191A JPS6490191A JP24379487A JP24379487A JPS6490191A JP S6490191 A JPS6490191 A JP S6490191A JP 24379487 A JP24379487 A JP 24379487A JP 24379487 A JP24379487 A JP 24379487A JP S6490191 A JPS6490191 A JP S6490191A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- expressed
- compound
- alkoxy
- alkyl
- 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
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
NEW MATERIAL:A compound expressed by formula I (X is oxygen, sulfur or selenium; formula II is aromatic, unsaturated heterocyclic or heterocyclic group condensed with benzene rings; R is 1-20C alkyl; R1 is H or 1-5C alkoxy; R2 and R3 are H, 1-5C alkyl, 1-5C alkoxy, carbonyl, halogen, nitro or cyano). EXAMPLE:3-Methylspiro[benzothiazoline-2,3'-[3H]naphtho[2,2-b](1,4)thia zine. USE:A photochromic compound for imaging. PREPARATION:(A) A solution of 2-methylbenzothiazole expressed by formula III in absolute ethanol is mixed with (B) a solution of methyl bromide in absolute ethanol and refluxed at 80 deg.C. (C) Triethylamine and (D) 1-nitrilo-2- naphthalenethiol expressed by formula IV are then added to further carry out refluxing. The resultant deposited substance is recrystallized to afford the aimed compound.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24379487A JPS6490191A (en) | 1987-09-30 | 1987-09-30 | Photochromic compound and composition thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24379487A JPS6490191A (en) | 1987-09-30 | 1987-09-30 | Photochromic compound and composition thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6490191A true JPS6490191A (en) | 1989-04-06 |
Family
ID=17109047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24379487A Pending JPS6490191A (en) | 1987-09-30 | 1987-09-30 | Photochromic compound and composition thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6490191A (en) |
-
1987
- 1987-09-30 JP JP24379487A patent/JPS6490191A/en active Pending
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