No abstract

No abstract

No abstract

No abstract

The Wittig reaction of 2,3-dihydro-4-(4-methoxybenzoyl)-5-(4-methoxyphenyl)-furan-2,3-dione (1) with methyl (triphenylphosphoranylidene)acetate (2) stereo-and regioselectively afforded methyl (Z)-[2,3-dihydro-4-(4-methoxybenzoyl)-5-(4-methoxyphenyl)-3-oxofuran-2-ylidene]acetate (3) in good yield. The reactions of 3 with primary amines (4 a -k) gave corresponding 1-substituted 2,3-dihydro-1H-p y r r o l -3 -o n e s (5a-k).