Signaling Recognition Events with Fluorescent Sensors and Switches.

Isolation and synthesis of biologically active carbazole alkaloids

Some Typical Advances in the Synthetic Applications of Allenes

The question of concerted or consecutive bond formation arises in all types of cycloaddition reactions. Stereochemical investigations and studies of regiospecificity as well as intensive kinetic investigations with regard to substituent and solvent effects, and the dependence of the reaction on temperature and pressure permit in many cases mechanistic conclusions concerning the Diels-Alder reaction. Efforts towards a theoretical interpretation, ab initio and semiempirical calculations, the application of frontier molecular orbital theory (FMO) as well as thermochemical measurements permit a description of the energy hypersurface of these [4+2]-cycloadditions. An attempt is made here to draw a line of distinction between the mechanistic alternatives—one-step reaction versus two-step reaction—considering all experimental and theoretical criteria.

Mechanistic Aspects of Diels‐Alder Reactions: A Critical Survey

Stereoselective Addition to N-Activated Pyridines James A. Bull,‡ James J. Mousseau, Guillaume Pelletier,† and Andre ́ B. Charette*,† †Department of Chemistry, Universite ́ de Montreál, P.O. Box 6128, Station Downtown, Montreál, Queb́ec, Canada H3C 3J7 ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K. Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA

Synthesis of Pyridine and Dihydropyridine Derivatives by Regio- and Stereoselective Addition to N-Activated Pyridines

Synthese d'heteryl-4 butene-3ones-2(A) par reaction AE de benzenesulfinyl-4 butene-3one-2 avec des furannes, pyrroles, imidazole, pyrazole et dimethylamino-6 fulvenes; par addition de Diels Alder les composes A sont ensuite transformes en furo [3,4-f] benzofurannes et -indoles; application a la synthese de psoralene et du lactame correspondant a partir de benzenesulfinyl-1 heptene-1yne-6one-3

Novel bicycloannulation via tandem vinylation and intramolecular Diels-Alder reaction of five-membered heterocycles: a new approach to construction of psoralen and azapsoralen

Reagent design and study of allene as a promising class of reagents (synthons) for cycloaddition. The site selective and regioselective Diels-Alder reactions of (phenylsulfonyl)propadiene and alkylation of the adducts

Studies on heteroaromaticity. XXXIII. Chemistry of diazepines. Photochemical intramolecular 1,3-dipolar cycloaddition of substituted 1-ethoxycarbonyliminopyridinium ylides

Ken Kanematsu

Papers

Novel bicycloannulation via tandem vinylation and intramolecular Diels-Alder reaction of five-membered heterocycles: a new approach to construction of psoralen and azapsoralen

Reagent design and study of allene as a promising class of reagents (synthons) for cycloaddition. The site selective and regioselective Diels-Alder reactions of (phenylsulfonyl)propadiene and alkylation of the adducts

Studies on heteroaromaticity. XXXIII. Chemistry of diazepines. Photochemical intramolecular 1,3-dipolar cycloaddition of substituted 1-ethoxycarbonyliminopyridinium ylides

Molecular design by cycloaddition reactions. XXV. High peri- and regiospecificity of phencyclone

Heteroaromaticity. XLIII. Orientation in the 1,3-dipolar cycloaddition reactions of heteroaromatic nitrogen methylides with dipolarophiles