1. Introduction 9137 2. Acid-induced ring contractions 9138 2.1. Wagner–Meerwein
rearrangements 9138 2.2. Pinacol rearrangements 9139 2.3. Rearrangement of epoxides …

A photo-redox-catalyzed procedure for the one-step formation of sultones from α, ω-alkenols
and trifluoromethylsulfonyl chloride is described. Using [Cu (dap) 2] Cl (1 mol%), a wide …

Niobium pentachloride has proved to be a powerful activating agent for various organic
reactions. This oxophylic reagent possesses a good Lewis acidity and has received …

Recently, we discovered a significant rate acceleration in RuO4-catalysed dihydroxylations
of olefins by addition of Brönsted-acids resulting in a reduction of the catalyst loading to only …

Niobium(V) pentachloride: an efficient catalyst for C-, N-, O-, and S-nucleophilic substitution
reactions of benzylic alcohols - ScienceDirect Skip to main contentSkip to article Elsevier logo …

Abstract Development of low cost, eco-friendly heterogeneous catalyst for the production of
value added organic compounds has been drawn a considerable attention to the synthetic …

Three new halogenated sesquiterpenes, 10-bromo-7α, 8α-expoxychamigr-1-en-3-ol (1), 10-
bromo-β-chamigren-8-ol (2), and 10-bromo-3-chlorocupar-5-en-2-ol (3), one new C12 …

The aim of this work was to investigate the use of NbCl5 as a Lewis acid in multicomponent
reactions between benzaldehyde, aniline derivatives and phenylacetylene in the synthesis …

Based on the mechanism of hydrolytic cleavage of Schiff bases, a 1-aminopyrene based
fluorescent chemodosimeter, 3, is reported for the selective detection of Nb5+ ions in …

CsF–Celite catalyzed regio- and chemoselective SN2 type ring opening of epoxides with thiol -
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