Phenylacetylenes reaction

These authors observed that in 80% aqueous ethanol, the rates were pseudo first order in bromostyrene, except for the P-NO2-isomer, which did not react even at 190° C. The products of reaction in the cases where X = NH2, CH3CONH, and CH3O were exclusively the corresponding acetophenones and, for X = H, 74% acetophenone and 22% phenylacetylene. Reaction rates were found to increase with solvent polarity as well as addition of silver ion, but they were independent of added triethylamine (except in the very unreactive p-nitro isomers, where in the presence of added amine, a second-order reaction ensued that resulted exclusively in p-nitrophenylacetylene as product). 

Phenylacetone, 54, 50 Phenylacetonitrile, 50, 20 Phenylacetylene, reaction with ethyl magnesium bromide,... 

Acetylene and disubstituted acetylene (such as 2-butyne) do not form copolymers with SO2. However, -alkyl acetylenes and phenylacetylene reaction to give a copolymer. 

Sodiiim phenylacetylene, reaction with p-nitrophenyl-propiolyl chloride, 615 Stilbazoles, -carboxy-prep-aration from pyridine aldehydes, 342, 343 stereochemistry, 342, 343 -cyano-preparation from pyridine aldehydes, 343 stereochemistry, 343 stereochemistry of, 348, 349 synthesis, 348, 349 Strecker reaction, preparation of 2-cyanomethylfurans, 666 Strecker synthesis, of pyri-dine-side chain nitriles, 362, 535-538 Streptonigrin, 626 Styryl isocyanates, reaction with ynamines, 639 6-Substituted-2,4-bis(alky 1-... 

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