1h dd j 1 j 2 7 8 hz 7 51 1h d j 7 8 hz 7 26 7 22 2h m 7 14 7 08 3h m 3 54 2h s 3 38 1h bs 2 50 1 82 10h bm u03b4 13 c nmr 75 mhz cdcl 3 160 38 154 37 134 84 132 54 132 24 127 84 121 33 120 84 117 75 115 22 112 71 106 92 74 32 59 98 43 11 u03b4 esi u2212 ms m z 367 c 17 h 20 n 2 ob 10 u2212 n bromosuccinimide 790 mg 4 4 mmol was dissolved in dichloroethane and the mixture was warmed to reflux 3 3 5 bis methyl phenoxy phthalonitrile 500 mg 2 mmol prepared according to procedures described in literature and a catalytic amount of benzoyl peroxide were added and the mixture was refluxed for 1 15 hours after cooling to room temperature the reaction mixture was diluted with dichloromethane washed with saturated solution of nahco 3 and water and dried on na 2 so 4 the solvent was evaporated and the crude was purified by flash chromatography eluent petroleum spiritlethyl acetate 4 1 to yield 350 mg 43 of the title compound 1 h nmr 300 mhz cdcl 3 7 63 1h dd j 1 j 2 8 hz 7 52 1h d j 8 hz 7 33 1h s 7 15 1h d j 8 hz 7 08 2h s 4 45 4h s n bromosuccinimide 394 mg 2 2 mmol was dissolved in dichloroethane the mixture was warmed to reflux 4 3 5 bis methyl phenoxy phthalonitrile 250 mg 1 mmol prepared according to procedures described in literature and a catalytic amount of benzoyl peroxide were added and the mixture was.