Fig. 5.

Heterodehydrocoupling of phosphines. a ³¹P{¹H} NMR spectra of tBuOK-catalysed heterodehydrocoupling of 1a with tBuOH in THF. b Reaction generality of catalytic heterodehydrocoupling of phosphines with alcohol, amine and thiol: reactions were performed with 0.1 mmol phosphines, 0.1–0.3 mmol of R³E-H_n; E = N, O, S, n = 1, 2 and 0.01 mmol tBuOK, 0.1 mmol HA-5 or HA-2, 0.5 mL THF in a J. Young NMR tube and yields were based on the phosphine as the limiting reagent and were determined by ³¹P{¹H} NMR spectroscopy using a capillary of PCl₃ as a calibration standard, the numbers in brackets were isolated yields. ^a25 °C, ^b130 °C