A method for the synthesis of oxymethyl dihydropyrroles (pyrrolines) and dihydroimidazoles has been developed via Cu(II)-mediated intramolecular aminooxygenation of alkenylimines and alkenylamidines, respectively, with 2...
alpha-Ketoimidoyl chlorides, obtained from alpha-addition of acyl chlorides onto alkyl isocyanides, are treated with enamines to afford 5-(alkylimino)-4-hydroxy-4,5-dihydro-1H-pyrrole-2,3,4-tricarboxylates and 2-(alkylim...
Acid-catalysed intramolecular hydroaminations of 2-alkenylarylethylamine derivatives lead smoothly to isoindolines via benzylic carbenium ion generation.
Palladium-catalyzed couplings of pyrid-4-yl nonaflates with methyl diazoacetate are described. After optimization of the reaction conditions the scope of the transformation proved to be fairly broad and a series of pyrid...
Phenones can be efficiently transformed into beta-substituted chalcones in a two-step process. First, propargylic alcohols were obtained by addition of ethoxyacetylene anion to aromatic ketones. Activation of the proparg...
Water was successfully employed as a reaction medium in palladium-catalyzed C-H cyclization of thiobenzanilides. Reactions efficiently proceeded under considerably mild conditions such as 40 degrees C in water, providing...
A variety of benzylic alcohols were oxidized to the corresponding carbonyl compounds selectively with 30% hydrogen peroxide (H2O2) in the presence of activated carbon. Alkylarenes such as fluorenes, xanthenes, and anthro...
The catalytic deacetylenative coupling reaction of terminal alkynes with various N-substituted propargylic amines proceeded in the presence of CuCl (10 mol%) and Na2HPO4 (4 equiv) in THF at 130 degrees C to give the corr...
In one-pot cascade reaction, a series of functionalized 3-aroyl-4-hydroxy-4-arylpiperidine derivatives were prepared from sulfonamides and vinyl ketones with good to excellent yields and diastereoselectivities. The react...
A separation-friendly Mitsunobu reaction using hydrophobic-tagged acids is reported. Commercially available or simply prepared and recyclable hydrophobic-tagged acids can react with various alcohols to afford the target ...