Synthesis of pyrrolo[2,3-d]pyrimidine-2,4-diones by sunlight photolysis of N-(5-vinyluracil-6-yl)sulfilimines

Vilsmeier reagent-mediated synthesis of 6-[(formyloxy)methyl]-pyrazolopyrimidines via a one-pot multiple tandem reaction

Vilsmeier reagent-mediated synthesis of pyrazolopyrimidines.

Reactions of CF3-enones with arenes under superelectrophilic activation: a pathway to trans-1,3-diaryl-1-CF3-indanes, new cannabinoid receptor ligands

CF₃-enones react with arenes in TfOH to givetrans-1,3-diaryl-1-CF₃indanes.

Rapid and efficient synthesis of fused heterocyclic pyrimidines under ultrasonic irradiation

Some fused heterocyclic pyrimidines have been synthesized in high yields using ultrasound irradiation in a one-pot, three-component and efficient process by condensation reaction of barbituric acids, aldehydes and a series of enamines in water. Prominent among the advantages of this new method are operational simplicity, good yields in short reaction times and easy work-up procedures employed.

The sunny side of chemistry: green synthesis by solar light

The storage of solar energy is one of the main challenges in the near future. A rather unexploited way to fulfil this goal is the solar light induced formation of new chemical bonds, i.e. the synthesis of chemicals. Solar photons can be considered the ideal green reagents since they are costless and leave no residue in the reaction mixture. In many cases the solar radiation could be successfully used in place of toxic or expensive chemical reagents to overcome the activation energy in organic synthesis. In this perspective, the emerging trends on the use of solar light for green synthesis are summarized, highlighting the advantages of this photochemical method.