DABCO is a non-toxic, affordable, environmentally friendly and highly reactive catalyst. The reagent has a widespread usage as a base, catalyst, substrate, nucleophile, component of ionic liquid and reagent.
The emergence of acetoxy allenoates as versatile synthons to generate a plethora of annulation/cycloaddition products via electrophilic diene–phosphonium/ammonium intermediates is highlighted in this feature article.
For the first time, a review has been conducted on the methods for the synthesis, as well as on the chemical, physical and biological properties, of 5-arylpent-4-ene-1,3-diones (hemicurcuminoids).
A rapid and simple method was developed for the synthesis of diarylmethyl thioethers via a DABCO-catalyzed 1,6-conjugate addition reaction of para-quinone methides (p-QMs) with organosulfur reagents.
Highly selective asymmetric divergent reactions of azlactones with 1,4-enediones were developed using catalyst-controlled diastereoselectivity and substrate-dependent chemoselectivity, respectively.