Tautomerism in ketomethyl quinolines. Part 3. 4-Ketomethylquinolines

Microwave-assisted preparation of Nـ alkyl 2ـ ketomethyl quinolines on Solvent-free Conditions

Nanocrystalline MgAl2O4 as a Heterogeneous Nanocatalyst for the Synthesis of 2-Ketomethylquinolines Using Green Design Methodology

In this investigation, a facile and green sonochemical route has been developed for the synthesis of 2-Ketomethylquinolines by using 2-methylquinolines and several acyl chlorides in the presence of nanocrystalline MgAl2O4 as an efficient heterogeneous catalyst. The combination of nanocatalyst and ultrasonic process afforded corresponding ketomethyl quinolines in shorter re...

Lectures 3 ( part ) , 4 and 5

Recall that a linear program defines a polyhedron. For simplicity, let us assume here that this polyhedron is nonempty (i.e., the LP is feasible) and bounded (namely, it is a polytope). Then we know that the optimal value of the LP is attained at a vertex of the polytope (equivalently, at a basic feasible solution to the LP). We say that two vertices of a polytope are adjacent if they are conne...

Keto - Enol and Imine - Enamine Tautomerism of 2 - , 3 - and 4 - Phenacylpyridines

Equilibrium constants for keto-enol tautomerisation and migration of hydrogen from carbon to nitrogen to form enamine or zwitterion tautomers have been measured for 2-, 3and 4phenacylpyridines (PyCH,COPh) in aqueous solution at 25 "C. Relative tautomeric stabilities fall in the order ketoimine > enamine > enol and (for the 3-isomer) enol > zwitterion. Values of pKT, (-log KT) where KT = [enamin...

Tautomerism in neutral histidine.

Histidine is an important natural amino acid, involved in many relevant biological processes, which, because of its physical properties, proved difficult to characterize experimentally in its neutral form. In this work, neutral histidine has been generated in the gas phase by laser ablation of solid samples and its N(ε)H tautomeric form unraveled through its rotational spectrum. The quadrupole ...