反应详情

The title compound was prepared (as described above for Intermediate 16) from 2.72 mL of 3′-methylacetophenone and 3.95 mL of EtOAc to yield 2.94 grams of Intermediate 21 as an oil: 1H NMR (400 MHz, CDCl3enol form) δ7.70 (m, 2H), 7.34 (m, 2H), 6.17 (s, 1H), 2.41 (s, 3H), 2.20 (s, 3H); low resolution MS (ES)m/e 177.1 (MH+).