Borane;tetrahydrofuran → 2-(6-Ethylamino-3-methoxy-5,6,7,8-tetrahydronaphthalen-2-ylsulfanyl)-2-methylpropionic acid tert-butyl ester

Participants

Reaction Steps

To a solution of 2-(6-acetylamino-3-methoxy-5,6,7,8-tetrahydronaphthalen-2-ylsulfanyl)-2-methylpropionic acid tert-butyl ester (0.68 g; 1.74 mmol) in THF (15 mL) was added a solution of 1.0 M borane-THF (15 mL), dropwise at room temperature. The reaction mixture was allowed to stir for 18 h at room temperature, then carefully quenched with MeOH (10 mL) and the solvent evaporated under reduced pressure. The residual oil was further azeotroped with MeOH (3×) to yield a mixture of 2-(6-ethylamino-5,6,7,8-tetrahydronaphthalen-2-ylsulfanyl)-2-methylpropionic acid tert-butyl ester and it's borane complex as an oil.

Provenance & Evidence