✦ LIBER ✦

Mechanism of formation of doubly charged fragments from bis-benzyltetrahydroisoquinolines under electron impact

✍ Scribed by Peter Bel; Asher Mandelbaum

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 422 KB
Volume: 15
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210151105

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✦ Synopsis

Abstract

Some bis‐benzyltetrahydroisoquinolines [α,α′‐di‐N,N‐(1‐benzyl‐1,2,3,4‐tetrahydroisoquinoline)‐p‐xylene and various substituted analogues] give rise to very abundant doubly charged fragment ions under electron impact, corresponding to the loss of the two benzyl groups. Substituent effects, ionization and appearance energy measurements and metastable transitions show that these doubly charged ions are formed (at least in part) from singly charged precursors by a heterolytic cleavage (charge separation).

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