Claims
- 1. A compound of the formula ##STR7## wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, phenyl, phenyl substituted by one or more lower alkyl, fluoro, chloro, bromo, nitro and lower alkoxy groups or benzyl and each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl.
- 2. The compound of claim 1 wherein R.sub.1 is methyl or ethyl.
- 3. The compound of claim 1 wherein each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen.
- 4. The compound of claim 3 which is 2-phenyl-4-(0,0-diethylphosphoryloxy)-3,6-dihydro-2H-1,2-oxazine.
Parent Case Info
This is a division of application Ser. No. 618,853 filed Oct. 2, 1975 which in turn is a division of application Ser. No. 497,598, filed Aug. 15, 1974, now U.S. Pat. No. 3,933,948, granted Jan. 20, 1976.
Foreign Referenced Citations (1)
Number |
Date |
Country |
1,233,843 |
Jun 1971 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Derwent Belgium Patents Report No. 5469j, pp. -5:3, Nov. 28, 1969. |
Divisions (2)
|
Number |
Date |
Country |
Parent |
618853 |
Oct 1975 |
|
Parent |
497598 |
Aug 1974 |
|