Results Descriptive Studies. Our principal experiments are summarized in Table I. They concern four phosphanion nucleophiles not previously involved in SRNl reactions, namely, PhP (0Bu) O-, Ph, PO-,(EtO), PS-, and (Me2N) 2PO-. These can be regarded as analogues of the much-studied2?""(EtO), PO-. Whereas diethyl phosphite
