f 0 68 1 1 bexane etoac mp gt 230 u00b0 c hplc c 18 column h 2 o ch 3 cn 1 1 with 0 1 tfa rt time 8 35 minutes purity 98 analysis c 14 h 13 cl 2 n 3 o 2 s calc c 46 94 h 3 66 n 11 73 found c 47 04 h 3 71 n 11 38 1 h nmr 400 mhz cdcl 3 u03b40 78 t 3h j 7 4 hz 1 36 m 2h 3 03 q 2h 6 6 hz 6 91 s 1h 7 16 t 1h j 8 0 hz 7 49 d 2h j 8 1 hz 8 70 s 1h 12 84 s 1h example 9 was synthesized in accordance with the methods of example 6 except that benzylamine was used instead of the methylamine it was purified by silica gel column hexane ethyl acetate 3 1 to 1 1 to yield the desired product 81 ms 408 0 m 1 for c 18 h 13 cl 2 n 3 o 2 tlc sio 2 r f 0 68 1 1 hexane etoac mp 204 8 205 6 u00b0 c lcms c 18 column h 2 o ch 3 cn 1 1 with 0 1 tfa rt time 13 53 minutes purity 98 analysis c 18 h 13 cl 2 n 3 o 2 s calc c 53 21 h 3 23 n 10 34 found c 53 61 h 3 25 n 9 01 1 h nmr 400 mhz cdcl 3 u03b44 87 s 2h 6 94 s 1h 7 11 t 1h j 8 3 hz 7 20 7 35 m 5h.