A Rh(III) catalyzed perimidine directed C–H activation strategy to achieve [4 + 1] and [4 + 2] annulations with two distinct classes of alkenes for the synthesis of perimidine-linked spiro-succinimides and isoquinolines has been developed.
Squaraine dyes are an important class of near-infrared (NIR) probes due to their strong absorption, high molar absorptivity, and structural tunability.
The Cu(I)-catalyzed N-arylation reaction of indole (or carbazole) with 6-bromo-1,3-dimethyl-1H-perimidin-2(3H)-one utilizing diamine ligands was accompanied by pyrazine ring annulation.
Stable, active and recyclable Fe single-atom catalyst for the synthesis of 2,3-dihydro-1H-perimidine derivatives via dehydrogenative coupling between 1,8-diaminonaphthalene and primary alcohols with good yields and wide functional group tolerance.
The synthesis of single phase δ-MnO2 NPs was carried out utilising an environmentally benign biogenic method. The prepared catalyst was utilized for benzimidazoles and dihydroperimidines synthesis and the dye removal study with exceptional catalytic activity.