Abstract
Allylic phosphine systems were studied as phosphorus–carbon double bond precursors. 1-Phenyl and 1-butyl-1-phospha-1,3-dienes were generated by pyrolysis at 350–460°C of the corresponding diallyl phosphines in a stirred-flow reactor. The unsubstituted phosphadienes generated in this manner dimerized; the formation of [4 + 2] cycloaddition products was confirmed by NMR and mass spectroscopic analysis. 31P NMR data of the 1-phospha-1,3-dienes were obtained.
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