Reactions of di-tert-butyldiphosphatetrahedrane (tBuCP)2 with Mes*O˙, (PhSe)2, and I2 produce 1,2-diphosphacyclobutene derivatives (tBuCPR)2 [R = OMes* (1), SePh (2), I (3); Mes* = 2,4,6-tri-tert-butylphenyl]. Reaction of 3 with LiAlH4 affords the elusive 1,2-dihydro-1,2-diphosphacyclobutene (tBuCPH)2 (4).
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M. K. Uttendorfer, L. M. Schneider, L. S. Diener, G. Hierlmeier, G. Balázs and R. Wolf, Chem. Commun., 2025, 61, 17464 DOI: 10.1039/D5CC05221A
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