DIAZEPINES, PART 29 - A COMPARISON BETWEEN 6-PHENYL-2,3-DIHYDRODIAZEPINIUM AND 5,7-DIPHENYL-2,3-DIHYDRODIAZEPINIUM SALTS, WITH COMMENTS ON THE REACTIVITY OF 6-PHENYLDIHYDRODIAZEPINIUM SALTS TOWARDS ELECTROPHILES - CRYSTAL AND MOLECULAR-STRUCTURES OF 6-PHENYL-2,3-DIHYDRO-1,4-DIEZEPINIUM AND 3-CYCLOHEXANO-6-PHENYL-2,3-DIHYDRO-1,4-DIEZEPINIUM PICRATES
D. Lloyd et al., DIAZEPINES, PART 29 - A COMPARISON BETWEEN 6-PHENYL-2,3-DIHYDRODIAZEPINIUM AND 5,7-DIPHENYL-2,3-DIHYDRODIAZEPINIUM SALTS, WITH COMMENTS ON THE REACTIVITY OF 6-PHENYLDIHYDRODIAZEPINIUM SALTS TOWARDS ELECTROPHILES - CRYSTAL AND MOLECULAR-STRUCTURES OF 6-PHENYL-2,3-DIHYDRO-1,4-DIEZEPINIUM AND 3-CYCLOHEXANO-6-PHENYL-2,3-DIHYDRO-1,4-DIEZEPINIUM PICRATES, Journal of chemical research. Synopses, (2), 1998, pp. 70
Conjugative interaction between a g-phenyl substituent and the vinamid
inium system of a dihydrodiazepinium salt appears to be less than that
observed with 5- or 7-phenyl substituents; despite this, electrophili
c substitution occurs very readily in the 6-phenyl group and comment i
s made on a possible mechanism.