反应详情

When tert-butyl 5-ethynyl-2,2-dimethyl-1,3-dioxan-5-ylcarbamate was substituted for 1-octyne and the product of Step A was substituted for 5-iodo-2-tritylisoindoline in Example 2, Step D, the similar process afforded the title compound in 46% yield, as a creamy paste. 1H-NMR (CDCl3) 0.85 (s, 3H); 1.1 (s, 3H); 1.44 (s, 3H); 1.46 (s, 9H); 1.48 (s, 3H); 1.63-1.65 (m, 2H); 1.79-1.86 (m, 5H); 2.05-2.08 (m, 1H); 2.27-2.32 (m, 1H); 2.89 (tr, 2H, J=6.59 Hz); 4.0-4.13 (m, 4H); 4.6 (broad s, 1H); 5.23 (s, 1H); 7.52 (d, 2H, J=8.25 Hz); 7.75 (d, 2H, J=8.46 Hz).