[CH:1]12[C:7]([CH3:9])([CH3:8])[CH:6]1[C:5](=[O:10])[CH:4]=[C:3]([CH3:11])[CH2:2]2.[CH3:12][SH:13]>>[CH3:12][S:13][C:3]1([CH3:11])[CH2:4][C:5](=[O:10])[CH:6]2[C:7]([CH3:8])([CH3:9])[CH:1]2[CH2:2]1In accordance with the procedure of Example 8 car-3-en-5-one is reacted with methylmercaptan by heating the reaction mixture in a suitable pressure-vessel for 3 hours to yield 3-methylthio-caran-5-on, boiling point ca 70° at 0.5 mm Hg, nD20 = 1.5224.
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