The Suzuki–Miyaura cross-coupling has been widely recognized as one of the most important methods for the construction of C–C bonds. However, in contrast to traditional aryl halide or pseudohalide electrophiles, coupling reactions with unactivated C–N and C–O electrophiles have proven significantly more challenging. Here we report the first general palladium-catalyzed Suzuki–Miyaura cross-coupl...

From an interplay of UHV-STM imaging and DFT calculations, we have illustrated on-surface formation of polyphenyl chains through a hierarchical reaction pathway involving two different kinds of reactions (Ullmann coupling and cross-dehydrogenative coupling), which will provide a deeper understanding of on-surface chemical reactions and an alternative and efficient strategy to fabricate desired ...

A Ni/photoredox dual catalytic cross-coupling is disclosed in which a diverse range of (hetero)aryl bromides are used as electrophiles, with 1,4-dihydropyridines serving as precursors to Csp3-centered alkyl radical coupling partners. The reported method is characterized by its extremely mild reaction conditions, enabling access to underexplored cores.

Key words (±)-rameswaralide - cembranoid diterpene Diels–Alder reaction Simmons–Smith cyclopropanation Stille cross-coupling Wacker–Tsuji oxidation Michael addition Julia–Kocienski olefination

The cross sections of the reaction pp → N KY for K + or K 0 mesons and Λ or Σ hyperons are calculated within the boson exchange model including pion and kaon exchange diagrams. We analyze the dependence of the results on the accuracy of the input πN amplitude. By fixing the πN N coupling constant and the cutoff parameter Λ π at the πN N vertex we calculate the contribution from the kaon exchang...

Carbohydrate-containing clusters of various valency were synthesized using transition metal-catalyzed reactions. Thus, Grubbs’ ruthenium benzylidene catalyst was used successfully in olefin self-and cross-metathesis reactions from both O-and C-alkenyl glycopyranosides. The reaction was also used to generate C-linked pseudodisaccharides. Oxidative dimerization of terminal alkynes such as 2-propy...

A study on room temperature Suzuki cross-coupling in an aqueous medium was carried out using a simple hydrophilic palladium (II) complex, trans-PdCl2(NH2CH2COOH)2 as catalyst in the presence of K2CO3 in air. This approach with a comparatively inexpensive and hydrophilic catalyst, mild reaction condition and aqueous media exhibits excellent catalytic activity towards the Suzuki coupling of aryl ...