Claims
- 1. A compound of the formula: ##STR8## wherein n is an integer of 0 to 1; x is an integer of 0 to 4; represents a monovalent moiety of the formula: ##STR9## wherein R.sub.1 is alkyl or aryl; and R.sub.2 represents alkylene.
- 2. A compound according to claim 1 wherein R represents the moiety of formula (II).
- 3. A compound according to claim 1 wherein R represents the moiety of formula (III).
- 4. A compound according to claim 1 wherein n is O.
- 5. The compound of formula: ##STR10## wherein R.sub.2 represents alkylene; Ry1 and Ry2 represent alkyl, alkoxy or alkylaryl; and Ry'1 and Ry'2 represents Br, C1, alkyl, alkoxy or alkyl aryl.
Parent Case Info
This is a divisional of application serial no. 08/783,598 filed on Jan. 13, 1997 now U.S. Pat. No. 5,698,732.
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Divisions (1)
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Number |
Date |
Country |
Parent |
783598 |
Jan 1997 |
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