The Synthesis of α, ω-Disubstituted Higher Alkanes from α, α, α, ω-Tetrachloroalkanes

Operators on C(ω α ) which do not preserve C(ω α

Spectral and intramolecular charge transfer properties in terminal donor/acceptor-substituted all-trans-α,ω-diphenylpolyenes and α,ω-diphenylpolyynes.

The absorption spectra and intramolecular charge transfer (CT) properties of terminal donor/acceptor-substituted all-trans-α,ω-diphenylpolyenes (DPE) and α,ω-diphenylpolyynes (DPY) molecules with different conjugated bridge length and substitution modes were investigated by using quantum chemical calculations. We calculated the ground state structures and energy of two series of terminal donor/...

Reactivation of organophosphate inhibited acetylcholinesterase activity by α,ω-bis-(4-hydroxyiminomethylpyridinium)alkanes in vitro

In this article, we have followed up the relationship between the ability to reactivate acetylcholinesterase inhibited by organophosphorus compounds and the length of linking chain between two 4-hydroxyiminomethylpyridinium rings of acetylcholinesterase reactivators. α,ω-bis(4hydroxyiminomethylpyridinium) alkanes have been used as the tested acetylcholinesterase reactivators. These oximes diffe...

An Environmentally Friendly Class of Fluoropolyether: α,ω-Dialkoxyfluoropolyethers

The α,ω-dialkoxyfluoropolyethers (DA-FPEs) characterized by the structure RHO(CF2CF2O)n(CF2O)mRH have been developed as a new class of environmentally friendly hydrofluoroethers (HFEs) suitable as solvents, long-term refrigerants, cleaning fluids, and heat transfer fluids. Synthetic methodologies for DA-FPEs described here consist of radical-initiated oxypolymerization of olefin, peroxy-elimina...

Synthesis of α,α-disubstituted aryl amines by rhodium-catalyzed amination of tertiary allylic trichloroacetimidates.

The rhodium-catalyzed regioselective amination of tertiary allylic trichloroacetimidates with unactivated aromatic amines is a direct and efficient approach to the preparation of α,α-disubstituted allylic aryl amines in good yield and with excellent regioselectivity. This method is applicable to a variety of unactivated primary and secondary amines and allows for the preparation of reverse pren...