74214-62-3Relevant articles and documents
1,3-Dipolar Cycloaddition of Nitrones with Nitriles. Scope and Mechanistic Study
Hermkens, Pedro H.H.,Maarseveen, Jan H. v.,Kruse, Chris G.,Scheeren, Hans W.
, p. 6491 - 6504 (2007/10/02)
1,3-Dipolar cycloadditions of nitrones 1-6 with nitriles 14-16, proceeded under thermal as well as under high pressure conditions with complete regioselectivity to give Δ4-1,2,4-oxadiazolines 17-19.In general, the cycloaddition seemed to be controlled by a HOMO(nitrone)- LUMO(nitrile) interaction.However, a crossover in the orbital control is probable observed with nitrile 16c.Nitrone-nitrile cycloadditions are normal type II cycloadditions so that the nitriles have a U-shaped reactivity curve.Kinetic study on solvent polarity and Hammett equation demonstrated that mechanistically the nitrone-nitrile cycloaddition is consistent with nitrone-alkene cycloaddition.
AROMATIZATION OF 3,4-DIHYDRO-β-CARBOLINE-3-CARBOXYLIC ACID AND ITS DERIVATIVES THROUGH A CARBANION INTERMEDIATE : MECHANISTIC STUDY AND USE IN CHEMICAL SYNTHESIS
Previero, A.,Barry, L-G.,Torreilles, J.,Fleury, B.,Letellier, S.,Maupas, B.
, p. 221 - 234 (2007/10/02)
3,4-dihydro-β-carboline-3-carboxylic acid, its esters and amide derivatives (AH2) undergo complete aromatization into corresponding β-carboline derivatives (A) by basic treatment under mild conditions.This, together with the easy obtention of 3,4-dihydro-