A class of organic compounds containing a phosphorus atom and two carbon atoms that are part of a spirocyclic structure.
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2,4,6-triethylphenyllithium
(+)-(2R,3S)-3,4-dimethyl-2,5-diphenyl-nitrobenzo<4,3-g>1,6-dioxa-4-aza-5-phospha (5-PV) spiro <4.4>nonane
