Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-19939
Satoh, H; Hutter, J; Luethi, H P; Manabe, S; Ishii, K; Ito, Y (2009). Low-Barrier Pathway for endo-Cleavage Induced Anomerization of Pyranosides with N-Benzyl-2,3-trans-oxazolidinone Groups. European Journal of Organic Chemistry, 2009(8):1127-1131.
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Pyranosides with N-benzyl-2,3-trans-oxazolidinone undergo anomerization from the beta form to the a form even in the presence of a weak Lewis acid. Experimental evidence for endocleavage, the breaking of the bond between the pyran-oxygen and anomeric carbon atoms, in the anomerization reactions was obtained. This unexpected phenomenon was investigated by quantum mechanical calculations, which found clear differences in the transition states between anomerized and non-anomerized substrates. The computations suggest that BF3 induces endo-cleavage followed by rotation of the C1-C2 bond to give the alpha form via lower-energy transition states.
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Institute of Physical Chemistry|
|Date:||29 January 2009|
|Deposited On:||31 Jul 2009 11:53|
|Last Modified:||23 Nov 2012 14:38|
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