Triethylamine → HCID 22276629, compound

Participants

Reaction Steps

To a mixture of tert-butyl 2-(7-(5-(4-(5-oxazolyl)phenyl)-2-thienyl)-1,1-dioxoperhydro-1,4-thiazepin-7-yl]acetate hydrochloride (4.2 g) and triethylamine (2.43 g) in a mixture of chloroform (24 ml) and N,N-dimethylformamide (12 ml) was added dropwise a solution of 9-fluorenylmethyl chloroformate (2.28 g) in chloroform (5 ml) under ice-cooling. After being stirred for 30 minutes, the mixture was concentrated in vacuo. The residue was dissolved in ethyl acetate and the solution was washed with water, a saturated aqueous sodium bicarbonate solution and brine, dried over magnesium sulfate, and evaporated in vacuo to give tert-butyl 2-[4-(9-fluorenylmethoxycarbonyl)-7-(5-(4-(5-oxazolyl)phenyl)-2-thienyl)-1,1-dioxoperhydro-1,4-thiazepin-7-yl]acetate (5.8 g) as an amorphous powder.

Provenance & Evidence