MASS-SPECTRAL STUDY OF 9-[α(β,γ)-PICOLYLIDENE]-1(4)-AZAFLUORENES

Abstract

200 1152x882 A mass-spectral study was carried out on the behavior of the Z- and E -isomers of 9-picolylideneazafluorenes. A possible mechanism for the elimination of a hydrogen atom from the M + ion of the Z - and E -isomers of 1(4)-azafluorene derivatives was examined. Mass spectrometry permitted a distinction between compounds isomeric relative to the position of the nitrogen atom in the azafluorene fragments and also the Z - and E -isomers of picolylidene derivatives of 1- and 4-azafluorenes possessing β- and γ-pyridyl substituents. 200 1152x882 Normal 0 Authors: P. I. Zakharov, N. M. Kolyadina, N. S. Prostakov, Mazhed Gassan, and N. I. Golovtsov. Normal 0 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} English Translation in Chemistry of Heterocyclic Compounds , 2000, 36 (11), pp 1300-1305 http://link.springer.com/article/10.1023/A%3A1017571417991 Normal 0 200 1152x882 A mass-spectral study was carried out on the behavior of the Z- and E -isomers of 9-picolylideneazafluorenes. A possible mechanism for the elimination of a hydrogen atom from the M + ion of the Z - and E -isomers of 1(4)-azafluorene derivatives was examined. Mass spectrometry permitted a distinction between compounds isomeric relative to the position of the nitrogen atom in the azafluorene fragments and also the Z - and E -isomers of picolylidene derivatives of 1- and 4-azafluorenes possessing b - and g -pyridyl substituents. 200 1152x882 A mass-spectral study was carried out on the behavior of the Z- and E -isomers of 9-picolylideneazafluorenes. A possible mechanism for the elimination of a hydrogen atom from the M + ion of the Z - and E -isomers of 1(4)-azafluorene derivatives was examined. Mass spectrometry permitted a distinction between compounds isomeric relative to the position of the nitrogen atom in the azafluorene fragments and also the Z - and E -isomers of picolylidene derivatives of 1- and 4-azafluorenes possessing β- and γ-pyridyl substituents. Normal 0 Normal 0