HYDROFORMYLATION OF METHYL ACRYLATE USING A PALLADIUM SCHIFF BASE CATALYST UNDER SYNGAS SOURCE

Hydroformylation of methyl acrylate can be carried out in a short time and without the use of syngas under microwave dielectric heating. We show that a Palladium Schiff base catalyst can control regioselectivity in heterogenous hydroformylation. Microwave irradiation, which produces greater yields in less reaction time and uses less energy than conventional heating systems, may carry out the hydroformylation reactions of the Methyl acrylate with greater efficiency and sustainability without using the CO and H2 cylinder. This method offers a hopeful prospect for a more sustainable future in chemical synthesis. Hydroformylation of Methyl acrylate using (PdL2)Cl2) (where L= N- (diphynylmethylide) Aniline (LA) and (E)-1-(2-methoxyphenyl)-N-phenylmethanimine (LB), as a catalyst at 120 oC for 20 minutes in the microwave and at 200 oC, 5 h in the conventional heating. This work demonstrates that methyl acrylates can be hydroformed in glyoxylic acid using a palladium catalyst system, producing the intended products, aldehydes, in outstanding yields and selectivities. Moreover, solventless synthesis using specific catalyst systems has improved catalytic performance compared to solvent-based reactions, attributed to higher reactant concentrations. Palladium complexes PdLA and PdLB gave excellent aldehyde yields in the microwave, 89 % (l/b ratio 96:4) and 86 % (95:5), respectively, over the conventional heating, which were analyzed by 1HNMR and GCMS spectroscopic techniques.