Amines, Enamines, Imines, Oximes, Isocyanates, Cyanides, and Related Compounds

Nitrogen.—Amines, Enamines, Imines, Oximes, Isocyanates, Cyanides, and Related Compounds. Perfluorotributylamine, (C4F9)sN (FCM3 ), has continued to feature in work on medical applications (blood oxygenation etc.) of fluorocarbon-type 

Rf = S-C4F9, i-C4F9, or n-CtiFg RS = Bu R , = t-C4F9, S-C4F9. i-C4F9, n-C4F9. i-CsF , 

Reagents i, AICI CCI4, A ii, cone. HjSO, 150—160 C iii, CH2N2, fitjO. 

R3 = H or Me a = 1—3)R N(CF2-CFRf O C3F7) (R = C4F9 or CsFi Rf = F or CFa x = 1—3). The stabilities of CFs-N(C2Fs)2, C2Fs-N(CF3)2, and (C2F5)sN in an electrical discharge and the temperature dependence of saturated vapour pressure, density, and enthalpy of vaporization for the trispentafluoroethyl compound have been determined. 

Full details of the preparation of pentakis(pentafluoroethyl)-l-azaprismane (30) in 91 % yield by u.v. irradiation of pentakis(pentafluoroethyl)pyridine (see p. 93) are now available so are those of the isolation (2% yield) of A difluoromethyl- 

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