反应详情

A mixture of Ia (0.535 g, 1.65 mmol), N-Methyl-N-Boc-L-Leucine (0.405 g, 1.65 mmol), HBTU (0.625 g, 1.65 mmol), and diisopropylethylamine (0.516 g, 6.6 mmol) was stirred in CH3CN (30 mL) for 15 hours. The reaction mixture was concentrated, redissolved in EtOAc, washed 3 times with saturated sodium bicarbonate solution and once with brine, then concentrated to give 1.2 g of the desired product.

1. concentrationThe reaction mixture was concentrated
2. dissolutionredissolved in EtOAc
3. washwashed 3 times with saturated sodium bicarbonate solution
4. concentrationonce with brine, then concentrated