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 C was substituted for 5-iodo-2-tritylisoindoline in Example 2, Step D, the similar process afforded the title compound in 56% yield, as yellow paste. 1H-NMR (CDCl3) 1.41 (s, 3H); 1.43 (s, 9H); 1.45 (s, 3H); 3.88 (s, 3H), 3.90 (s, 6H), 3.95 (s, 3H); 3.96 (d, 2H, J=11.58 Hz); 4.05 (d, 2H, J=11.45 Hz); 7.0 (dd, 1H, J=2.25, 8.82 Hz); 7.00 (s, 2H); 7.44 (broad s, 1H); 7.46 (d, 2H, J=8.7 Hz); 7.80 (d, 2H, J=8.61 Hz); 7.89 (s, 1H); 8.08 (d, 1H, J=8.82 Hz),