Patent ID: 11897984
Assignee: KEMIRA OYJ
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 14:
15. The method of claim 11, wherein:
(i) R50 is an unsubstituted C1 alkyl, x is a double bond, R51 is hydrogen, and the compound of Formula (A) is 3-methylfuran-2,5-dione—, or
(ii) R50 and R51 are hydrogen, x is a double bond, and the compound of Formula (A) is furan-2,5-dione—, or
(iii) R50 is hydrogen, x is a single bond, R51 is an unsubstituted C1-alkenyl, and the compound of Formula (A) is 3-methylenedihydrofuran-2,5-dione—, or
(iv) R50 and R51 are an unsubstituted C1 alkyl, x is a double bond, and the compound of Formula (A) is 3,4-dimethylfuran-2,5-dione—, or
(v) R50 is hydrogen, x is a single bond, R51 is an unsubstituted C3-alk-1-enyl, and the compound of Formula (A) is 3-allyldihydrofuran-2,5-dione—,