Transition metal substituted diphosphenes. 11. [1 + 4]-Cycloaddition of diphosphenes with acrolein: synthesis and structure of dihydro-1,2l5-oxaphospholes with exocyclic P:P bond.
Reaction of diphospheneiron, Cp(CO)2FeP:PR [Cp = pentamethylcyclopentadienyl, R = 2,4,6-(Me3C)3C6H2] with acrolein gave oxaphosphole iron carbonyl complex I, contg. an exocyclic P:P double bond. Crystal structure of I was detd.
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