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Removal of Water - a Factor Influencing the Synthesis of Alkynes in a Phase-Transfer Catalyzed - beta - Elimination Reaction

Zakrzewski J., Huras B., Sas A., Żelechowski K., Bombińska D.

Polish Journal of Chemistry

2008

Vol. 82, nr 5

1051-1057

Acetylene derivatives 4 were synthesized from the corresponding vicinal bromo compounds 2 in the phase-transfer catalyzed hydrogen bromide - beta 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.