Efficient photocatalytic acetalization of furfural to biofuel components using carboxyl-functionalized porphyrin photocatalyst, under visible light irradiations

Solvent/metal-free benzimidazolium-based carboxyl-functionalized porphyrin photocatalysts for the room-temperature alkylation of amines under the irradiation of visible light

“…The desired photocatalyst (MFBBCFPc) was accomplished by using the following protocol from the literature. 57 A 100 mL RBF was charged with acetic acid (30 mL) and the mixture ( 4F ) (2.82 g, 6 mmol), ( 4E ) (0.818 g, 1 mmol) and pyrrole (0.536 g, 8 mmol). The reaction content was refluxed for 1.5 h (Scheme 7).…”

Visible Light Mediated Heck Coupling of Inactivated Aryl Fluoride/Chloride Over a Sulfonic Acid Functionalized, Melamine‐based Metal‐free Porphyrin Photocatalyst

“…Porphyrin-based photocatalysts, being panchromatic, appeared as quite effective in organic transformations at ambient conditions in a homemade photoreactor driven under visible light irradiance. [64][65][66] The porphyrin-based photocatalysis, has attracted the attention of researchers and synthetic chemists as a robust, metal/base free protocol working under ambient conditions and visible irradiance for organo-synthesis with a great potential to fulfil economic and ecological challenges as against the precious metal-based photocatalyst.…”

“…Our research team is engaged in the design and synthesis of Brønsted acid‐functionalized heterogeneous porphyrin‐based photocatalysts entwined with ionic liquid moieties for applications in organic transformations especially, in converting biomass‐derived platforms chemicals to valued compounds. Porphyrin‐based photocatalysts, being panchromatic, appeared as quite effective in organic transformations at ambient conditions in a homemade photoreactor driven under visible light irradiance [64–66] . The porphyrin‐based photocatalysis, has attracted the attention of researchers and synthetic chemists as a robust, metal/base free protocol working under ambient conditions and visible irradiance for organo‐synthesis with a great potential to fulfil economic and ecological challenges as against the precious metal‐based photocatalyst.…”

High N‐H Photoacidity of a Nitrogen‐Rich Fused Ring Heteroaromatic Scaffold

“…To address the important point concerning the effectiveness of HNTT as a photo-driven proton releasing system, we have employed HNTT as photocatalyst in the reaction of acetalization of aldheydes with alcohols, which has been recently shown to be effectively promoted under photoacidic conditions. [41][42][43][44][45][46] The results are summarized in Figure 3, where the conversion yields for benzaldehyde and 3-phenylpropionaldehyde are reported. Inspection of Figure 3 shows that a mixture of HNTT (5 % mol) and 3-phenylpropionaldehyde in acetonitrile/methanol (3 : 2) irradiated at 365 nm resulted in total conversion to the corresponding acetal within 2.5 hours.…”