Preparation & Stereochemistry of some Diphosphorus Heterocycles |
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| Authors: | P Brooks M J Gallagher A Sarroff |
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| Institution: | School of Chemistry, University of N.S.W. , P.O. Box 1, Kensington, NSW, 2033, Australia |
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| Abstract: | Abstract Cleavage of Ph2P(CH2)nPPh2(n=2?5) with Li in THF provides a convenient source of the corresponding dianions which may be alkylated with X(CH2)nX (X=Cl,Br,n=1?3) to give diphosphorus heterocycles with a ring size 5–7. These are separated into their stereoisomers and stereochemical assignments made. An alternative route to an eight-membered ring is described. |
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