A Hetero Diels–Alder Concerted vs. Aldol Stepwise Mechanism in the Cyclization of Silyloxyazadienes with Aldehydes: A Theoretical Study
作者： Alessandro Bongini , Mauro Panunzio
关键词: Aldol reaction 、 Formaldehyde 、 Lewis acid catalysis 、 Diels alder 、 Stereochemistry 、 Chemistry 、 Aldehyde 、 Cycloaddition 、 Lewis acids and bases
摘要: The Diels–Alder reaction of 3-silyloxy-2-azadiene with formaldehyde has been studied at the B3LYP/6-31G* level theory and role played by a Lewis acid evaluated. It is shown that preferred when coordinates to aldehyde oxygen. This coordination allows for concerted as well stepwise mechanism cyclization. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
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