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For the synthesis of triethynylbenzene, one takes 1,3,5-tribromobenzene and by means of a simple two-step procedure triethynylbenzene is produced in 80 percent yield.
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Synthesis of Triethynylbenzene
For the synthesis of triethynylbenzene, one takes 1,3,5-tribromobenzene and
by means of a simple two-step procedure triethynylbenzene is produced in 80
The aromatic halogen-containing material is dissolved in an appropriate
solvent (e.g., triethylamine, picoline, etc.) under inert atmosphere and reacted
with a mono-substituted acetylene compound (e.g., trimethylsilyl acetylene, 3-
methyl-2- utyne-3-ol, etc.) in this presence of an organo-metallic catalyst. The
protected aromatic ethynyl compound is then hydrolyzed with base (sodium
hydroxide, potassium t-butoxide, etc.) to the desired triethynylbenzene monomer.