Sentence Examples


  • The oxyderivatives of the tetrahydroand hexahydro-pyrimidines are the uracils and the ureides of malonic acid (see PuRIN).
  • Dibromcotinine on hydrolysis yields oxalic acid, methylamine and 0-methyl pyridyl ketone: C10H10Br2N20+3H20+0= H2C204-ECH 3 NH 2 +C 5 H 4 N 000H 3 +2HBr; whilst dibromticonine yields methylamine, malonic acid and nicotinic acid: C10H8Br2N202+ 4H20=CH 3 NH 2 +CH 2 (CO 2 H) 2 +C 5 H 4 N CO 2 H+2HBr, or if heated with zinc and caustic potash, methylamine and pyridyl-ay-dioxybutyric acid.
  • MALONIC ACID, C 3 H 9 0 4 or CH 2 (000H) 2, occurs in the form of its calcium salt in the sugar beet.
  • Malonic acid, as well as its esters, is characterized by the large number of condensation products it can form.
  • Many esters of malonic acid have been prepared, the most important being the diethyl ester (malonic ester), CH 2 (000C 2 H 5) 2, which is obtained by dissolving monochloracetic acid in water, neutralizing the solution with potassium carbonate, and then adding potassium cyanide and warming the mixture until the reaction begins.

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