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Stereospezifische Fragmentierungen in den Massenspektren von Cyclohexandiaminen und Bis(aminomethyl)cyclohexanen. 33. Mitteilung über massenspektrometrische Untersuchungen , ,
Author(s) -
Süess Hans,
Hesse Manfred
Publication year - 1979
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19790620415
Subject(s) - chemistry , cyclohexanes , stereospecificity , mass spectrum , stereochemistry , ring (chemistry) , medicinal chemistry , ion , catalysis , organic chemistry
Stereospecific Fragmentations in the Mass Spectra of Cyclohexanediamines and Bis(aminomethyl)cyclohexanes The mass spectral behaviour, especially loss of NH 3 , of the six isomeric cyclohexanediamines 1‐‐3 ( cis and trans each, Scheme 1 ) as well as of the six isomeric bis(aminomethyl)cyclohexanes 4‐‐6 ( cis and trans each, Scheme 6 ) has been investigated. The cis ‐ and trans ‐compounds of the 1,2‐isomers 1 and 4 show very similar spectra, because of the ease of ring cleavage at C(1)–‐C(2) and the similar geometrical relations in all ring conformations. The cis ‐ and trans ‐compounds of both the 1,3‐ and 1,4‐isomers 2, 3, 5 and 6 show striking differences in their mass spectra due to stereospecific elimination of NH 3 from the molecular ion.