14 h 13 io 3 c 47 21 h 3 68 i 35 63 found c 46 15 h 3 96 i 36 05 b 6 cyano 2 3 4 39 methoxycyclohexeno chromone m p 138 u00b0 140 u00b0 was prepared from 6 iodo 2 3 4 39 methoxycyclohexeno chromone according to the procedure described in example 1 b calcd for c 15 h 13 no 3 c 70 58 h 5 13 n 5 49 found c 70 68 h 5 00 n 5 53 the cyano intermediate was converted into the cycloalkenochromone m p 217 u00b0 219 u00b0 according the procedure described in example 1 c calcd for c 15 h 14 o 5 c 65 59 h 5 15 found c 65 58 h 5 11 the cycloalkenochromone m p 268 u00b0 270 u00b0 was prepared from 6 cyano 2 3 4 39 methoxycyclohexeno chromone according to the procedure described in example 2 calcd for c 15 h 14 n 4 o 3 c 60 39 h 4 73 n 18 78 found c 60 32 h 4 79 n 18 08 7 iodo 2 3 cyclopentenochromone m p 246 u00b0 248 u00b0 was prepared from 4 iodoacetylsalicylic acid and 1 n piperidino cyclopentene according to the procedure described in example 1 a and converted to 7 cyano 2 3 cyclopentenochromone using cuprous cyanide the cyano compound was converted to 7 carboxy 2 3 cyclopentenochromone and 7 5 1h tetrazolyl 2 3 cyclopentenochromone using the procedures described in example 1 c and 2 respectively a 7 iodo 2 3 cyclohexenochromone m p 194 u00b0 196 u00b0 was prepared from 4 iodoacetylsalicylic acid and 1 n pyrrolidino cyclohexene according to the procedure described in example 1 a calcd for.