Palladium-catalyzed multi-component synthesis of steroidal A- and D-ring fused 5,6-disubstituted pyridines under microwave irradiation

• Steroidal 5,6-disubstituted pyridines were synthesized in A- and D-ring.
• Pd(OAc)2 catalyzed multi-component reaction provided the products.
• β-Halovinyl aldehydes, alkynes and benzylamine were the starting materials.
• Reactions were performed in solvent-free condition under microwave irradiation.

The preparation of steroidal A-, D-ring fused 5,6-disubstituted pyridines and nonsteroidal substituted pyridines is described form Pd(OAc)2 catalyzed multi-component reaction of steroidal/nonsteroidal β-halovinyl aldehyde, alkyne and benzylamine in solvent-free condition under microwave irradiation.

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