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A novel palladium catalyzed approach to 3-arylindoles was developed from indoles and cyclohexanones. Various cyclohexanones acted as aryl sources via an alkylation and dehydrogenation sequence using molecular oxygen as the hydrogen acceptor. This method showed good regioselectivity and afforded 3-arylindoles as the sole products.

A palladium-catalyzed desulfitative hydroarylation of alkynes with aryl sulfinic acid sodium salts is described. The reaction showed good regio- and stereoselectivity, and afforded the hydroarylation products in good yields. Various functional groups were well tolerated under the optimized reaction conditions.

The palladium-catalyzed desulfinative iodination of sodium sulfinates and sulfonyl hydrazides with KI or I2 is described. The reaction proceeds smoothly under mild conditions using O2 or air as an environmentally benign oxidant. [ABSTRACT FROM AUTHOR]

The Pd-catalyzed desulfinative iodination of sodium sulfinates and sulfonyl hydrazides is developed using either KI or iodine as reagent in the presence of air or oxygen as terminal oxidant. [ABSTRACT FROM AUTHOR]