Abstract
The reaction of phosgene with the anion 2,5-diphenylphospholyl gives 2,2′,5,5′-tetraphenylbiphospholyl. This compound reacts in boiling toluene with cobalt carbonyl to yield (η 5-2,5-diphenylphospholyl)dicarbonylcobalt which shows no catalytic activity in the cyclooligomerization of acetylenes. It also reacts with bromine and alcohols to give 1-alkoxyphospholes. We have also fortuitously observed that the reaction of phenyllithium with 1,2,5-triphenylphosphole yielded a 2.6 1 mixture of 2,5-diphenyl- and 2,3,5-triphenyl-phospholyl anions.
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