Claims
- 1. A compound having the structure formula ##STR27## wherein R is carboxy, cyano or --CO.sub.2 R.sub.a wherein R.sub.a is C.sub.1 -C.sub.4 alkyl; R.sup.1 is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, --CH.sub.2 CH.sub.2 OCH.sub.3, --CH.sub.2 CH.sub.2 OC.sub.2 H.sub.5, --CH.sub.2 CH.sub.2 SCH.sub.3 or --CH.sub.2 CH.sub.2 SC.sub.2 H.sub.5 and R.sup.2 is C.sub.1 -C.sub.4 alkyl with the proviso that when R is carboxy, then R.sup.1 is only --CH.sub.2 CH.sub.2 OCH.sub.3, --CH.sub.2 CH.sub.2 OC.sub.2 H.sub.5, --CH.sub.2 CH.sub.2 SCH.sub.3 or --CH.sub.2 CH.sub.2 SC.sub.2 H.sub.5.
- 2. The compound of claim 1 wherein R is carboethoxy; R.sup.1 is C.sub.1 -C.sub.3 alkyl, --CH.sub.2 CH.sub.2 OCH.sub.3, --CH.sub.2 CH.sub.2 OC.sub.2 H.sub.5 or --CH.sub.2 CH.sub.2 --SC.sub.3 ; and R.sup.2 is C.sub.1 -C.sub.4 alkyl.
Parent Case Info
This is a divisional of application Ser. No. 07/386,648 filed July 31, 1989, now U.S. Pat. No. 5,001,256 which is a divisional of application Ser. No. 07/273,391, filed Nov. 18, 1988, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3013055 |
Richter |
Dec 1961 |
|
3334125 |
Richter |
Aug 1967 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
0108526 |
May 1984 |
EPX |
0195247 |
Sep 1986 |
EPX |
42-7451 |
Mar 1967 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Tetrahedron, vol. 44, No. 6, (1988), pp. 1631-1636. |
Divisions (2)
|
Number |
Date |
Country |
Parent |
386648 |
Jul 1989 |
|
Parent |
273391 |
Nov 1988 |
|