US3616377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of oxetanes and derivatives thereof by photocyclo addition
Assignee: Union Carbide Corp
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Filing: 1969-06-25
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Granted: 1971-10-26
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Expires: 1989-06-25
Abstract
Abstract Oxetanes, such as the 3-oxatricyclo ( 4.2.1.0) nonanes, are prepared by the photocatalyzed reaction of a ketone with an olefinic compound. The reaction is carried out by bringing the ketone and the olefinic compound into admixture in a suitable reactor and irradiating the mixture with light energy.
Inventors
- 👤 Donald R Arnold
- 👤 Anthony A Sousa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:00
CPC Classifications
C; C07; C07D; C07D305/00; C07D305/14; C07D495/00; C07D495/02; C07D495/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
The method for the production of the oxetane of the formula:
Claim 2
Independent Claim
63 words
The method for the production of 4-(metapyridyl)-4-phenyl-3-oxatricyclo(4.2.1.02,5)nonane which comprises bringing metabenzoylpyridine into admixture with norbornene and irradiating the resulting mixture with light energy at a wavelength in the range of from about 2,000 to about 4,000 Angstroms and at a temperature in the range of from about 0* C. to about 100* C. for a period of time sufficient to produce said 4-(metapyridyl)-4-phenyl-3-oxatricyclo(4.2.1.02,5)nonane.
Claim 3
Dependent Claim
21 words
The method according to claim 3 wherein the temperature is in the range of from about 10* to about 30* C.
Claim 4
Independent Claim
80 words
A method for the production of 4-phenyl-4(N-methyl-1,2,5,6-tetrahydropyridyl)-3 -oxatricyclo(4.2.1.02,5)nonane which comprises (1) bringing norbornene into admixture with benzoylpyridine, and irradiating the resulting mixture with light energy at a wavelength in the range of from about 2,000 to about 4,000 Angstroms and at a temperature in the range of from about 0* C. to about 100* C. for a period of time sufficient to produce 4-(parapyridyl)-4-phenyl-3-oxatricyclo(4.2.1.02,5)nonane, (2) methylating said 4-(parapyridyl)-4-phenyl-3-oxatricyclo(4.2.1.02, 5)nonane to form 4-(N-methylpyridyl)-4-phenyl-3-oxatricyclo(4.2.1.02,5)nonane, and (3) reducing said 4-(N-methylpyridyl)-4-phenyl-3-oxatricyclo(4.2.1.02,5)nonane to 4-phenyl-4(N-methyl-1,2,5,6-tetrahydropyridyl)-3 -oxatricyclo(4.2.1.02,5)nonane.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |