Claims
- 1. A process for preparing a compound of the formula ##STR67## which comprises reacting a compound of the formula ##STR68## with 1 to 2 mole equivalents of chlorine or sulfuryl chloride in 5 to 50 volumes by weight of aromatic hydrocarbon or ester solvent at a temperature of from about -20.degree. C. to 30.degree. C., wherein in the above formulas R represents (a) 1-6 C alkyl, (b) 7-15 C aralkyl, (c) 7-15 C heterocyclicalkyl, (d) 7-9 C aryloxyalkyl, (e) 7-9 C heterocyclicoxyalkyl, (f) 6-10 C aryl, (g) 6-10 C heterocyclic, (h) 1-6 C alkoxy, (i) 7-15 C aralkoxy, (j) 7-15 C heterocyclicalkoxy, (k) 6-10 C aryloxy, (l) 6-10 C heterocyclicoxy, (m) carbamoyl, or (n) 2-7 C carbalkoxy, each of said groups being unsubstituted or substituted by hydroxy, 1-6 C alkanoyloxy, 1-3 C alkoxy, 7-9 C aralkoxy, 6-8 C aryloxy, oxo, amino, 1-3 C alkylamino, 1-5 C alkanoylamino, nitro, 1-3 C alkyl, 6-10 C aryl, carboxy, protected carboxy, cyano or halo, and COB is carboxy or protected carboxy.
Priority Claims (2)
Number |
Date |
Country |
Kind |
52-1760 |
Jan 1977 |
JPX |
|
52-36613 |
Mar 1977 |
JPX |
|
Parent Case Info
This application is a division of application Ser. No. 868,422, filed Jan. 10, 1978 now U.S. Pat. No. 4,220,766.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4155911 |
Foglio et al. |
May 1979 |
|
4159984 |
Yoshioka et al. |
Jul 1979 |
|
4183855 |
Yoshioka et al. |
Jan 1980 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
868422 |
Jan 1978 |
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