Imidazole → HCID 178501291, compound

Participants

Reaction Steps

99.0 g (0.63 mol) of the compound from Example 51A are dissolved in 2 liters of dry DMF, and 132.0 g (0.88 mol) of tert-butyldimethylsilyl chloride and 80.9 g (1.19 mol) of imidazole are added at RT. The mixture is stirred at RT for 16 h. The solvent is then removed almost to dryness on a rotary evaporator and the residue is taken up in 2 liters of a 1:1 mixture of tert-butyl methyl ether and saturated aqueous sodium bicarbonate solution. The phases are separated, the organic phase is dried over magnesium sulfate and the solvent is removed on a rotary evaporator. The product is used in the next reaction without further purification.

Provenance & Evidence