This search combines search strings from the content search (i.e. "Full Text", "Author", "Title", "Abstract", or "Keywords") with "Article Type" and "Publication Date Range" using the AND operator.
Beilstein J. Org. Chem. 2012, 8, 398–402, doi:10.3762/bjoc.8.43
Graphical Abstract
Scheme 1: Synthesis of the first free and stable N-heterocyclic carbene by Arduengo [2].
Scheme 2: Conjugate “umpolung” of α,β-unsaturated aldehydes.
Scheme 3: The carbene + conjugate acid – azolium + base equilibrium.
Scheme 4: Formation of Breslow intermediates 10 and iminium salts 12 and their use toward the synthesis of γ-...
Scheme 5: Synthesis of trans-γ-lactams 16 through NHC/Brønsted acid cooperative catalysis.
Figure 1: Proposed hydrogen-bonding intermediates 19 in the formation of pyrrolidin-2-ones 16.