| 摘要 |
Method for the preparation of cyano-heterocycles having the general formula I <IMAGE> wherein W, X, Y and Z represent a nitrogen atom, the CH rest or CR1 rest, with R1 representing a hydrogen atom, an alkyl rest with a straight or branched chain having from 1 to 10 atoms of carbon and being optionally substituted, an aralkyl rest having from 7 to 10 atoms of carbon, an aryl or hetero-aryl rest, a carboxyl, hydroxyl, amino, mono- or di-alkylamino, mono- or di-aryl-amino, alkylsulfonyl, arylsulfonyl, trifluoromethyl group, a halogen substituant, a cyclo-alkyl rest, a cyano group or -OR2 rest, wherein R2 represents a hydrocarbonated rest having from 1 to 10 atoms of carbon with a straight or branched chain, a cyclo-alkyl rest having from 3 to 10 atoms of carbon, aralkyl with 7 to 10 atoms, aryl or hetero-aryl, -COOR3 group, R3 representing a hydrocarbonated rest with 1 to 10 atoms with a straight or branched chain, a cyclo-alkyl rest with 3 to 10 atoms of carbon, aralkyl with 7 to 10 atoms or carbon, phenyl, naphtyl or hetero-aryl or -CONR4 R5, R4 and R5 representing hydrogen, a hydrocarbonated rest with 1 to 10 atoms of carbon with the straight or branched chain, cyclo-alkyl with 3 to 10 atoms, aralkyl with 7 to 10 atoms, aryl or hetero-aryl or else R4 represents hydrogen and R5 represents -COR6 or -SO2 R6, R6 having the same signification as R2; or else, formula wherein W-X, X-Y and Y-Z represent the complement optionally substituted by a rest R1 of an aliphatic, aromatic cycle or heterocycle, which contains one or a plurality of nitrogen, oxygen or sulfure atoms; the method is characterized in that an N-oxyde having the general formula II <IMAGE>wherein W, X, Y, Z and R1 have the same acceptations given hereabove is reacted with a trimethyle-silyle cyanide. |
