DDQ-mediated C-O bond formation through cross-dehydrogenative coupling (CDC) reaction without any metal catalyst under mild conditions was developed. Series of isochromans and oximes could be employed as substrates, and ...
Facile fluorination of imidazole derivatives at the 4- or 5-position has been achieved successfully by Selectfluor. This is the first report of a technique for preparing fluoroimidazoles in one step.
Practical synthetic routes to 3-deoxy-D-manno-octulo-sonic acid (KDO) and 3-deoxy-D-arabino-2-heptulosonic acid (DAH) from common sugar substrates are reported. Chain homologation of the sugar substrates was accomplished...
Ring expansion of keto aziridines to the corresponding 2,5-diaryl oxazoles in the presence of dicyclohexyl carbodiimide and iodine under refluxing acetonitrile conditions is described. A plausible mechanism is proposed.
A novel Neu5TFA-(alpha 2-3)-Gal building block with removable protecting group at N5' was introduced and used in the divergent synthesis of a library of N-acetyl and N-glycolyl derivatives of oligosaccharides related to ...
By phosphite-mediated couplings between functionalized benzaldehydes and 1,3-dithiole-2-thiones we have obtained a variety of pi-extended tetrathiafulvalenes (TTF). In particular, this method has provided a new stilbene-...
A convenient and practical method for the one-pot, three-component synthesis of terminal vinylphosphonates from readily available starting materials (aryl/alkyl/heteroaryl aldehydes, nitromethane and trialkylphosphites) ...
An approach to the synthesis of the multisubstituted tetrahydroisoquinoline featuring an asymmetric Ugi reaction of a-amino acid, aromatic aldehyde and an isocyanide has been developed. The promising utility of the strat...
Synthesis of hexaaminobenzene (HAB) in pure and stable form has remained as an important challenge for a long time, since it is a fascinating synthon for the synthesis of aromatic nitrogenous compounds having many intere...
The reaction of phenylhydrazine with a sugar dialdehyde in water, as a key step for the synthesis of the 3-amino-3-deoxy-D-glucose moiety contained in kanamycin, has been revisited. Structural studies (IR and NMR as well...
Pd(II) anionic, square planar complexes of the type [RPPh3](2)[Pd2X2Cl4], where X = Cl, Br, have been applied for the first time as a catalyst precursor for the Heck reaction carried out in DMF at 140 degrees C. The high...
We developed a modular synthesis of halogenated polycyclic aromatic monomers for on-surface polymerization to generate graphene wires, ribbons, and networks.