From phenylalkylcyanamides to heterocyclic selenazadiphospholaminediselenides and carbamidoyl(phenyl)phosphinodiselenoic acids.
The reaction of 2,4-bis(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide (Woollins' Reagent, WR) with phenylalkylcyanamides (RR'NC[triple bond, length as m-dash]N, R = PhCH2CH2, R' = CH3 and R = PhCH2CH2CH2, R' = H) in refluxing toluene led to novel heterocyclic selenazadiphospholaminediselenides and (43% and 42% yields), the latter being hydrolyzed to the unusual zwitterionic carbamidoyl(phenyl)phosphinodiselenoic acids and in excellent yields (96% and 98%).
School of Chemistry, University of St Andrews, Fife, UKKY16 9ST.
Guoxiong
G
Hua
Qingzhi
Q
Zhang
Yang
Y
Li
Alexandra M Z
AM
Slawin
J Derek
JD
Woollins