Removal of water - a factor influencing the synthesis of alkynes in a phase-transfer catalyzed β-elimination reaction
Acetylene derivatives 4 were synthesized from the corresponding vicinal bromo compounds 2 in the phase-transfer catalyzed hydrogen bromide β-elimination reaction using solid potassium hydroxide as a base, xylene as a solvent, and a phase-transfer catalyst. The yields of the synthesized acetylene derivatives 4 were substantially improved when water formed in the process had been removed.
Zakrzewski,Huras,Sas,Zelechowski,Bombinska
p. 1051 - 1057
(2008/09/21)
Nucleophilic Contribution of the Solvent in Olefin Bromination. 1. Steric Inhibition to Nucleophilic Solvation in Alkene Bromination via Bromonium Ions
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Ruasse, Marie-Francoise,Zhang, Ben-Li
p. 3207 - 3210
(2007/10/02)
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