Claims
- 1. A compound of the formula ##STR7## wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, aryl or benzyl, each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl and Z is the residue of a dienophile moiety selected from the group consisting of tetracyanoethylene.
- 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 1,1,2,2-tetracyano-4-(O,O-diethylphosphoryloxy)-cyclohex-4-ene.
Parent Case Info
This is a division, of application Ser. No. 618,853 filed October 2, 1975,now U.S. Pat. No. 425,584, 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.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3954919 |
Kishino et al. |
May 1976 |
|
Divisions (2)
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Number |
Date |
Country |
Parent |
618853 |
Oct 1975 |
|
Parent |
497598 |
Aug 1974 |
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