Two new syntheses of (Z)-jasmone (3; R = (Z)-CH2CH=CHCH2Me) are reported. One is based on an initial oxidative opening of a 2,5- disubstituted furan (1; R = (Z)-CH2CH2CH=CHCH2Me) to an enedione (2; R = (Z)-CH2CH2- CH=CHCH2Me), the other on an efficient procedure for obtaining the keto acid (3; R = CH2CO2H) and the extension of the acetic acid side chain stereospecifically.