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Phenylphosphine in the complex (R*, R*)-(±)-[Fe(η-C5H5){C6H4(PMePh)2-1,2}(PH2Ph]PF6 was treated with 1,3-dibromopropane in the presence of KOBut to give 1-phenylphosphetane; similarly, (±)-(3-chloropropyl)phenylarsine was converted into 1-phenylarsetane.
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Bader et al. (1992) studied this question.
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