LETTERS An Organic Demonstration
tained. The temperature of the mixture a t this point will be 2O0-25'. he funnel can then be placed-on a " ring stand. The temperature of the solution will rise Most organic reactions are not adaptable for class- slowly and in about three it will reach 550+00. room demonstrations because they are time-consum- ~t this noint the solution will suddenlv become turbid. ing and require considerable care to insure their success. and water will commence to separate as a lower layer. In our study of the nitroparaffin derivatives, we have The reaction will be complete in about 15 minutes. discovered a reaction which does not present these dif- The top layer will weigh about 198 g. and will consist ficulties, and which is well suited for a classroom demon- of about 195 g. of 4,4-dimethyl-2-(3-heptyl)oxazolidine, stration. It is the reaction of 2-amino-2-methyl-l- b. p. 89'-90' a t 4 mm., and 2-3 g. of 2-ethylhexaldepropanol with 2-ethylhexaldehyde. hyde. The aqueous layer, about 19 ml., will contain Eighty-nine grams of 2-amiuo-2-methyl-l-propanol about 17.5 g. of water and 1.5 g. of 2-amino-Z-methyl-l(one mol), m. p. 32' and b. p. 165', and 128 g. of 2- propanol. ethylhexaldehyde (one mol), b. p. 164', which has been MURRAY SENKUS cooled to 20°, are placed in a 250-ml. separatory funnel, and the mixture is shaken until homogeneity is atT- '7.DJ:."... 1 W'C M ' W , .
