反应详情

Step A In a manner similar to the method described in Example 3a Step A to C, (4R)-(−)-4-(2-hydroxyethyl)-2,2-dimethyl-1,3-dioxolane (Aldrich) (4.91 g, 33.6 mmol) was reacted with methanesulfonyl chloride (3.12 mL, 40.3 mmol) and triethylamine (9.34 mL, 67 mmol) in dichloromethane, then reacted with NaN3 (10.7 g, 0.16 mol) in N,N-dimethylformamide, then treated with PtO2 and H2 (50 psi) in ethyl acetate to give 2-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-ethylamine as a brown oil (4.4 g, 90% for three steps).