1 H NMR [ CDCl 3 , 300 MHz ] 15 . 37 ( s , 1 H ) , 8 . 25 ( d , 1 H , J = 6 . 4 Hz ) , 7 . 99 ( d , 2 H , J = 7 . 3 Hz ) , 7 . 75 - 7 . 63 ( m , 3 H ) , 7 . 27 ( m , 2 H ) , 7 . 05 ( s , 1 H ) , 6 . 94 - 6 . 85 ( m , 3 H ) , 3 . 67 - 3 . 62 ( m , 1 H ) , 3 . 09 ( q , 2 H , J = 7 . 5 Hz ) , 2 . 9 ( s , 3 H ) , 1 . 51 ( d , 3 H , J = 6 . 7 Hz ) , 1 . 45 ( t , 3 H , J = 7 . 5 Hz ) , 1 . 29 ( d , 3 H , J = 6 . 7 Hz ) . 수율 = 98 %.