反应详情

N-t-Butyloxycarbonyl-β-alanine t-butyl ester (2.0 g) was isopropylated by the same procedure as in Comparative Example 4-(1) using isopropyl iodide (1.8 ml) to yield an oil of N-t-butyloxycarbonyl-α-isopropyl-β-alanine t-butyl ester (990 mg, 42%).