N,N'-Dimethylurea → 69248-03-9

Beteiligte Stoffe

Reaktionsschritte

A solution of 80% THPC (59.55 g, 0.25 mol) and 1,3-dimethylurea (88.12 g, 1 mol) was heated to reflux in an oil bath, held at reflux for 4 hrs., allowed to cool, and stripped to dryness in a rotary evaporator. The residue (130.67 g) was shaken with acetonitrile (100 ml) and filtered, giving 29.40 g (25.0%) of tetrakis(1,3-dimethylureidomethyl)phosphonium chloride (I, R=R'=CH3, R"=H, X=Cl) as a white, crystalline solid, mp 189°-190° C. dec. The remainder, a heavy oil, yielded no more product nor water even when subjected to azeotropic distillation with toluene and more 1,3-dimethylurea.

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