Imidazole → 5-(tert-Butyldimethylsilyloxy)-1H-indole

Participants

Reaction Steps

A suspension of 5-hydroxy-indol (5 g, 38 mmol), tert-butyldimethylsilyl chloride (6.1 g, 39.4 mmol) and imidazole (5.4 g, 68 mmol) in DMF (50 ml) was stirred for 20 h at RT. The reaction mixture was taken up in ether and washed with 1N HCl and water. The organic layer was dried over sodium sulfate and concentrated under reduced pressure to give 9.4 g (38 mmol, quant.) 5-(tert-butyl-dimethyl-silanyloxy)-1H-indole.

Provenance & Evidence