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The interaction between thermal radiation and reactant molecules in a conventional thermal catalytic reactor has been overlooked as an energy source. The electromagnetic thermal radiation from the heating modules can excite infrared vibrational modes of reactant molecules, facilitating inelastic collisions that selectively enhance reaction pathways. Herein, carbon dioxide enables thermal radiative catalytic ethane dehydrogenation and is found to boost the production of ethylene by 120% with a selectivity of about 100%.

A highly efficient and stereoselective method for the synthesis of (1Z)‐1,2‐dihalo‐3‐vinyl‐1,3‐dienes featuring palladium‐catalyzed coupling of haloalkynes and 2,3‐butadienyl acetates was developed. The resulting products were smoothly converted into cis‐1,2‐dihalostyrene derivatives using the Diels–Alder/aromatization sequence.

The products are smoothly converted into cis‐1,2‐dihalostyrene derivatives [cf.

The palladium‐catalyzed haloallylation of alkynes (I) in dichloromethane leads stereoselectively to (E)‐dihalodienes (III), whereas (Z)‐isomers (IV) are readily obtained by the same reaction in acetic acid in the presence of lithium halides.