反应详情

A solution of 23.4 g of 1,4-diiodobenzene in 124 ml of tetrahydrofuran is mixed drop by drop at -70° C. under nitrogen with 45 ml of a 1.6 molar butyllithium solution, and it is stirred for 5 more minutes. Then, a solution of 18 g of 1-(4-benzyloxy-phenyl)-2-phenyl-butan-1-one [D. W. Robertson; J. A. Katzenellenbogen; D. J. Ellen; A. Rorke; B. S. Katzenellenbogen, J. Steroid Biochem., 1982, 16, 1-13] in 180 ml of tetrahydrofuran is added in drops, allowed to come to room temperature by completing the cooling, and it is stirred for 1 more hour. For working-up, 60 ml of saturated ammonium chloride solution is added, diluted with diethyl ether, washed neutral with water, dried on sodium sulfate, concentrated by evaporation in a vacuum and chromatographed on silica gel with pentane/diethyl ether. 31.5 g of 1-(4-benzyloxy-phenyl)-1-(4-iodophenyl)-2-phenyl-butan-1-ol is obtained as oil.

1. customto come to room temperature
2. stirringis stirred for 1 more hour
3. washwashed neutral with water
4. customdried on sodium sulfate
5. concentrationconcentrated by evaporation in a vacuum
6. customchromatographed on silica gel with pentane/diethyl ether