hrms esi calcd for c 21 h 15 n 2 of 6 m h 425 1089 found 425 1082 these two compounds f364 0 29 g 42 and f365 0 21 g 21 were prepared from 2 6 difluoro 3 aminobenzamide 0 40 g 2 3 mmol 2 4 difluorobenzyl bromide 0 60 g 2 9 mmol acn 20 ml and k 2 co 3 0 42 g 3 0 mmol according to the preparation procedure of f362 and f363 described above for f364 1 h nmr 400 mhz chloroform d u03b4 7 25 7 36 m 1h 6 74 6 90 m 3h 6 64 dt j 5 38 9 05 hz 2h 6 20 br s 1h 4 38 s 3h 13 c nmr 101 mhz chloroform d u03b4 163 7 163 5 163 0 162 6 162 1 161 9 161 2 161 1 159 5 152 4 150 1 150 0 149 3 133 1 133 1 133 0 133 0 130 0 130 0 129 9 129 9 121 3 121 3 121 2 121 1 113 5 113 4 113 4 113 3 112 9 112 7 111 6 111 5 111 5 111 4 111 4 111 3 111 3 111 2 104 3 104 0 103 8 41 1 lrms esi m z 299 m h 100 321 m na 20 hrms esi calcd for c 14 h 11 n 2 of 4 m h 299 0808 found 299 0793 for f365 1 hnmr 400 mhz chloroform d u03b4 7 25 7 38 m 2h 6 90 dt j 5 87 9 05 hz 1h 6 72 6 85 m 5h 6 56 br s 1h 6.