Synthesis of (±)-Aphanorphine Using Rh-Catalyzed Cyclohydrocarbonylation

A facile formal synthesis to aphanorphine and its analogue is described, featuring Rh-catalyzed cyclohydrocarbonylation of 2-aminodihydronaphthalene to the bridged benzazepine core. Subsequent introduction of the methyl group and functional group transformation complete the synthesis of aphanorphine and its analogue over eight steps.

A highly stereo-controlled protocol to prepare pipecolic acids based on Heck and cyclohydrocarbonylation reactions

A consecutive series of metal-catalyzed reactions for the preparation of enantiomerically pure piperidine derivatives.

Diastereoselective synthesis of novel aza-diketopiperazines via a domino cyclohydrocarbonylation/addition process

A short and diastereoselective synthesis of newly reported aza-diketopiperazine (aza-DKP) scaffolds starting from amino-acids was achieved using domino Rh(i)-catalyzed cyclohydrocarbonylation/addition.

Total synthesis of sedum alkaloids via catalyst controlled aza-Cope rearrangement and hydroformylation with formaldehyde

The catalytic asymmetric aminoallylation of chiral aldehydes is developed as a new method for the catalyst controlled synthesis of syn- and anti-1,3-aminoalcohols. This methodology is highlighted in the synthesis of the sedum alkaloids (+)-sedridine and (+)-allosedridine both of which have their final carbon incorporated during closure of the piperidine ring via a hydroformylation with formaldehyde.

Facile one-pot synthesis of sugar-quinoline derivatives

Seven different sugar-quinoline derivatives were synthesised in a 'one-pot' reaction from their corresponding C-beta-glycoside derivatives. The compounds were characterised by NMR spectroscopy and elemental analysis.

Mechanistic Investigation of the Cobalt-Catalyzed Selective Conversion of Diallylanilines to Quinolines Involving C−N and C−H Activations

2,3-Substituted quinolines were readily prepared from diallylanilines in good yields under mild conditions by using Co2(CO)(8) as catalyst. Regioselectivity has been explored by examining a series of electron-donating and electron-withdrawing functional groups at ortho, meta, and para positions of the diallylanilines. The results show that both steric and electronic effects influence the isolated yields. Electron-withdrawing groups inhibit the reaction. Solvent effects, temperature effects, and catalyst loadings have also been investigated. Isotopic labeling experiments were devised to permit delineation of the mechanism of reaction.