Full-text Article (Subscribers only)
Full-text article (72 kB)
(subscribers only)

Buy article on-line and get access immediately
Buy article on-line for £11.75
(get immediate access)

Search
Search

Go Back

Eur. J. Mass Spectrom. 2, 287 - 293 (1996)

Anionic migration effected by collisional activation. Hydride ion mobility in keto substituted alkoxide anions

John M. Hevko, Suresh Dua and John H. Bowie
Department of Chemistry, The University of Adelaide, South Australia, 5005.

ABSTRACT:
Keto alcohols of the formula MeCO(CH2)nOH (n= 35) are deprotonated by HO at both OH or a to the carbonyl group. The various deprotonated species interconvert under the conditions of collisional activation. The fragmentations of (MH) ions are varied and complex, with most fragmentations being directed from the alkoxide centre. These fragmentations have been investigated by product ion and deuterium labelling studies. An interesting hydride transfer reaction occurs when n = 3 and 4, i.e. H transfer occurs from the CH2 group next to the alkoxide centre to the carbon of the carbonyl group to form CH2CHO as the product anion. This reaction does not occur when n = 5. The corresponding Me transfer from deprotonated MeCO(CH2)n1C(Me)2OH (n = 2 and 3) is not observed.

Keywords:

You can now buy this paper on-line in PDF format; it costs only £11.75. Just click on the BUY on-line button. You can pay on-line through a secure server and get access immediately.


© IM Publications
Any problems? E-mail .