Regioselectivities of (4 + 3) Cycloadditions between Furans and Oxazolidinone-Substituted Oxyallyls

Design of novel multicomponent cycloadditions using conjugated furans and pyrroles

Research in the Herndon group focuses on the discovery of new organotransition metal-based processes for use in organic synthesis. Of specific interest are reactions that transform simple starting materials into complex products in a general, predictable, efficient, and stereoselective manner. Most of our present activity involves exploration of the coupling reaction between Fischer carbene com...

Highly selective synthesis of tetra-substituted furans and cyclopropenes: copper(I)-catalyzed formal cycloadditions of internal aryl alkynes and diazoacetates.

A convenient Cu(I)-catalyzed cycloaddition of electron rich internal aryl alkynes and diazoacetates was discovered for the chemoselective and regioselective synthesis of tetra-substituted furans and cyclopropenes in moderate isolated yields (18-67%), and alkyne conversion (29-73%).

Cycloadditions of Noncomplementary Substituted 1,2,3-Triazines

The scope of the [4 + 2] cycloaddition reactions of substituted 1,2,3-triazines, bearing noncomplementary substitution with electron-withdrawing groups at C4 and/or C6, is described. The studies define key electronic and steric effects of substituents impacting the reactivity, mode (C4/N1 vs C5/N2), and regioselectivity of the cycloaddition reactions of 1,2,3-triazines with amidines, enamines, ...

Synthesis, Characterization and Study of Some N-Substituted Aryl-2- ({4-[(Substituted Aryl Carbamoyl) Methyl]-5-(Pyridin-4-yl)-4H-1, 2, 4-Triazol-3-yl} Sulfanyl) Acetamide

Pathogenic infections and inflammation are very common ailments humans suffer. Upsurge of resistant pathogens has impeded the antimicrobial drug development process in recent years and the search of new antimicrobial agents is clearly evident from the literature. In line with these developments the synthesis of N-substituted aryl-2-({4-[(substituted aryl carbamoyl) methyl]-5-(pyridin-4-yl)-4H-1...

Theoretical study of 1, 3-dipolar cycloadditions of nitrone and fulminic acid with substituted ethylenes