Unlike b-diketones the a-nitroacetophenone failed to react with compound I under the same conditions. The reaction of 1-trimethylsilyl-3-chloro-1-propyne with a-nitroacetophenone in the presence of equimolar amounts of KI and sodium ethylate afforded only 1-trimethylsilyl-3- iodo-1-propyne (III) that as the compound I did not enter further into C-alkylation reaction.
