2-tert-butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine in acetonitrile T=40°C; 15 h; Schlenk techniqueInert atmosphere; Temperature;

in diethyl ether

zinc trifluoromethanesulfonate; carbonic acid diethyl ester 45 h; Inert atmosphereRefluxSolvolysis;