An unprecedented organocatalyzed [3+ 2] annulation of cyclopropenones and β-ketoesters
has been developed. This reaction provides a direct approach to highly substituted …

Reverse to success! A new formal [3+ 2] annulation reaction combining alkynyl aldehydes
and β, γ‐unsaturated α‐ketoesters has been disclosed by using a NHC‐catalyzed/Lewis …

An asymmetric annulation reaction of γ-butenolides and cyclic 1-azadienes containing a 1, 2-
benzoisothiazole-1, 1-dioxide motif has been studied, proceeding in a tandem Michael …

A transition-metal-free, three-component, and diastereoselective [6+ 3] annulation reaction
employing tropone, imino esters, and arynes allowing the synthesis of bridged azabicyclo …

Hepta-2, 3, 5-trienedioates 1 have been employed as substrates to explore Lewis base-
catalyzed annulation reactions. This leads to the discovery of a phosphine-catalyzed [3+ 2] …

N-Heterocyclic carbene (NHC)-catalyzed formal [3+ 2] annulation of α, β-unsaturated
aldehydes with N-substituted isatilidenes resulting in the diastereoselective synthesis of …

Divergence in the PBu3-catalyzed [3+ 2] annulation of phenacylmalononitriles with
allenoates, controlled by the γ-substitution on allenoates, offers a tunable synthesis of …

A novel protocol for the annulation of tropone to enals involving nucleophilic heterocyclic
carbene (NHC) catalyzed homoenolate formation has been developed. Interestingly, the …

A novel phosphine-catalyzed [3+ 2] annulation of γ-substituted allenoates with succinimides
was developed, which was successfully applied to the synthesis of 2-azaspiro [4.4] nonene …

A novel organocatalytic approach to γ, γ‐disubstituted butenolides is described. It is based
on a fully site‐selective functionalization of 5‐alkylidenefuran‐2 (5H)‐ones via trienamine …