反应详情

A mixture of 0.26 g of 3,5-dichloro-1-(3,3-dichloro-2-propenyloxy)-4-(4-(3-cyano-3,3-dichloro-2-hydroxypropyloxy)butyloxy)benzene, 0.079 g of pyridine, 0.077 g of acetic anhydride, 10 mg of N,N-dimethyl-4-aminopyridine and 10 ml of N,N-dimethylformamide was stirred at room temperature for 30 minutes, to which 0.065 g of zinc dust was added. The reaction mixture was further stirred at room temperature for 1 hour, poured into 20 ml of diluted hydrochloric acid and extracted twice with diethyl ether. The diethyl ether layers were combined, washed with water, dried over magnesium sulfate and then evaporated to give a crude product. The crude product was subjected to silica gel chromatography, which afforded 0.19 g of 3,5-dichloro-1-(3,3-dichloro-2-propenyloxy)-4-(4-(3-chloro-3-cyano-2-propenyloxy)butyloxy)benzene (yield, 83%), nD23.0 1.5410.

1. additionwas added
2. extractionextracted twice with diethyl ether
3. washwashed with water
4. dry with materialdried over magnesium sulfate
5. customevaporated
6. customto give a crude product