Search

Your search keyword '"Grant, Tina N."' showing total 2 results
Start Over Author "Grant, Tina N." Database Gale General OneFile
2 results on '"Grant, Tina N."'

1. Cyclopropyl alkynes as mechanistic probes to distinguish between vinyl radical and ionic intermediates

Author

Gottschling, Stephen E., Grant, Tina N., Milnes, Kaarina K., Jennings, Michael C., and Baines, Kim M.

Subjects
Acetylene -- Chemical properties, Biological sciences, Chemistry
Abstract

The reactions of (trans-2-phenylcyclopropyl) ethyne, (trans,trans-2-methoxy-3-phenylcyclopropyl) ethyne, and (trans,trans-2-methoxy-1-methyl-3-phenylcyclopropyl) ethyne, with either aqueous sulfuric acid or tris (trimethylsilyl) silane or AIBN are investigated. Protonation and addition of the silyl radical occurred at the terminal position of the alkyne giving an alpha-cyclopropyl-substituted vinyl cation or radical, respectively.

Published
2005

2. A new approach to the Nazarov reaction via sequential electrocyclic ring opening and ring closure

Author

Grant, Tina N. and West, F.G.

Subjects
Chemical reactions -- Analysis, Ring-opening polymerization -- Analysis, Cations -- Chemical properties, Chemistry
Abstract

A novel Nazarov reaction is described in which 2-chloro-3-silyloxypentadienyl cations capable of electrocyclization are generated from easily available dichlorocyclopropane precursors, as an alternative method for generation of Nazarov-type pentadienyl systems which may permit novel trapping pathways or greater functional group compatibility. Examples are presented of an apparent sequential 2pi electrocyclic opening/4pi electrocyclic closure using alkenyldichlorocyclopropanes as pentadienyl cation precursors.

Published
2006

Catalog

Books, media, physical & digital resources
See catalog results