[O:1]1[CH2:5][CH2:4][CH2:3][CH:2]1[C:6]1([OH:11])[CH2:10][CH2:9][CH2:8][CH2:7]1.C(N(CC)CC)C.[C:19](Cl)(=[O:22])[CH:20]=[CH2:21].O>C1(C)C=CC=CC=1.CN(C1C=CN=CC=1)C>[C:19]([O:11][C:6]1([CH:2]2[CH2:3][CH2:4][CH2:5][O:1]2)[CH2:7][CH2:8][CH2:9][CH2:10]1)(=[O:22])[CH:20]=[CH2:21]In 80 ml of toluene were dissolved 16.8 g of 1-(2-tetrahydrofuranyl)cyclopentanol, 13.1 g of triethylamine, and 0.5 g of 4-(N,N-dimethylamino)pyridine. Then 10.7 g of acrylic chloride was added to the solution at 50° C., which was stirred at the temperature for one hour. Water, 50 ml, was added to the solution below 30° C., followed by ordinary post-treatment. Vacuum distillation yielded 18.1 g of 1-(2-tetrahydrofuranyl)cyclopentyl acrylate. The two-step yield was 80%.
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