Ruthenium-Catalyzed Synthesis of Functionalized 1,3-Dienes

Abstract

Functionalized 1,3-diene derivatives have been prepared by regioselective allylation of various nucleophiles with 1,3-dienic carbonates in the presence of a (N,O-carboxylate) allylruthenium precatalyst.

Ru(II) xantphos complex as an efficient catalyst in transfer hydrogenation of carbonyl compounds

“…The metal complexes containing large bite angle ligands such as xantphos, [9, 9-dimethyl-4, 5-bis (diphenylphosphino) xanthene], and others with a relatively similar moiety exhibit noticeable coordination chemistry along with catalytic activity [8][9][10]. Over the last decades, the ruthenium catalyzed reactions directed to organic synthesis have got much attention and a large number of highly efficient synthetic approaches are well documented in literature [11][12][13][14][15][16][17]. Recently, extensive research has been assigned to the improvement of rutheniumcatalyzed hydrogenation of unsaturated polar bonds such as aldehydes and ketones [18][19][20].…”

Novel half‐sandwich η5‐Cp *–rhodium(III) and η5‐Cp *–ruthenium(II) complexes bearing bis(phosphino)amine ligands and their use in the transfer hydrogenation of aromatic ketones

“…Considerable attention has been focused on the preparation and properties of ruthenium and rhodium complexes due to their catalytic activities in transfer hydrogenation. There is also continuing interest in the chemistry of half‐sandwich η 5 ‐ Cp*–Rh(III) and η 5 ‐Cp*–Ru(II) metal complexes because of their possible use in various catalytic reactions . The reactivity of η 5 ‐Cp*–Ru(II) with substituted P―N―P‐based ligands have been reported by Balakrishna and co‐workers; however, to the best of our knowledge no reports of half‐sandwich Cp*–Rh(III) complexes containing P―N―P type ligands have been reported so far.…”

Ene–yne cross-metathesis with ruthenium carbene catalysts

“…They have been used in sequential catalytic transformations in the presence of ruthenium catalysts, which are able to perform regioselective allylic substitution by O-, N- and C-nucleophiles (Scheme 8) [55] and elimination to provide a new access to dendralenes (Scheme 8) [56]. …”