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[reaction: see text] The five- to seven-membered alpha-alkylidene lactams were prepared in 45-99% yield by the palladium-catalyzed cyanoamidation of alkynyl cyanoformamides. The reaction proceeded exclusively in a 5-exo mode, giving the corresponding (Z)-alkenes as major products. The reaction was also applied to 1,1-disubstituted alkenes to afford oxindoles bearing a quaternary carbon center.

We have developed efficient catalytic methods for the stereoselective and diversity synthesis of various (E)-, (Z)-, and disubstituted 3-alkylideneoxindoles and 3-alkylidenebenzofuran-2-ones via palladium-catalyzed Heck/Suzuki-Miyaura, Heck/Heck, and Heck/carbonylation/Suzuki-Miyaura domino reactions.

The palladium-catalyzed tandem cyclization/cross-coupling reaction of triethyl(indol-2-yl)borate with vinyl bromide was successfully used in the concise total synthesis of the indolophenanthridine alkaloids, calothrixins A and B. [ABSTRACT FROM AUTHOR]

The reaction of optically active 3-alkyl-2-vinylaziridines with various aldehydes in the presence of InI and Pd(PPh3)4 gives rise to chiral syn,syn-2-vinyl-1,3-amino alcohols possessing three contiguous chiral centers stereoselectively. The ratio of the syn,syn-isomer to the other three isomers is significantly affected by the C3-substituents of aziridines as well as the alkyl groups of aldehydes. In addition, the obtained 1,3-aminoalcohols can be converted into biologically important β2,3-amino acid derivatives. [Copyright &y& Elsevier]

Abstract: Investigation of the palladium-catalyzed tandem cyclization-cross-coupling reaction using indolylborate (2) as a transfer agent has been carried out. Furthermore, the cross-coupling reaction performed under carbon monoxide led to the generation of indolyl ketones. [Copyright &y& Elsevier]