Volume 52, Issue 38 pp. 10064-10067
Communication

The 2-Phosphaethynolate Anion: A Convenient Synthesis and [2+2] Cycloaddition Chemistry

Andrew R. Jupp

Andrew R. Jupp

Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK) http://research.chem.ox.ac.uk/jose-goicoechea.aspx

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Dr. Jose M. Goicoechea

Corresponding Author

Dr. Jose M. Goicoechea

Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK) http://research.chem.ox.ac.uk/jose-goicoechea.aspx

Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK) http://research.chem.ox.ac.uk/jose-goicoechea.aspx===Search for more papers by this author
First published: 01 August 2013
Citations: 148

We thank the EPSRC and the University of Oxford for financial support of this research (DTA studentship to A.R.J.) and the University of Oxford for access to Chemical Crystallography and OSC facilities. We also thank Elemental Microanalysis Ltd. (Devon) for performing the elemental analyses. R. S. P. Turbervill is acknowledged for the synthesis of the ketene and carbodiimide.

Graphical Abstract

Hip to be square: Direct carbonylation of solutions of the heptaphosphide trianion (P73−) afforded the phosphaethynolate anion in moderate yields. This species undergoes [2+2] cycloaddition reactions with diphenylketene and bis(2,6-diisopropylphenyl)carbodiimide to yield the anionic four-membered heterocycles P[C(O)]2C(C6H5)2 and PC(O)(CNDipp)NDipp.

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