反应详情

When the product of Step A was substituted for propyl 3,4-dipropoxybenzoate in Example 43 Step B, the identical process afforded the title compound in 97%, as creamy solid. 1H-NMR (CDCl3) 1.05-1.09 (m, 3H); 1.83-1.96 (m, 2H); 4.12-4.17 (m, 2H); 7.13 (d, 1H, J=9 Hz); 8.23 (dd, 1H, J=3, 9 Hz); 8.53 (d, 1H, J=3 Hz).