Chemistry - Sciene

The current study involves the preparation of pyrimidine derivatives from reaction of thiopyrimidine with different compounds of hydrazine hydrate derivatives, amines and with ethylaceto acetate as in compounds:

1) 6-methyl-4-oxo-1,2,3,4-tetrahydro-2-thiopyrimidine.

2) 2-hydrazino-6-methylpyrimidine-4-(3H) one.

3)6-methyl-2-(3-methyl-5-oxo-4,5-dihyro-1-H-pyrazol-1-yl)-pyrimidine-4-(H) one.

4) 2-phenylhydrazino-6-methylpyrimidine-4-(3H) one.

5) 2-(2,4)-dinitrophenylhydrazino-6-methylpyrimidine-4-(3H) one.

     The successful burning of heavy  fuel in gas turbines depends on the additive to prevent hot corrosion of hot gas path components, to prevent vanadium hot corrosion in the turbine hot gas path, a minimum ratio of magnesium to vanadium is required. In this work a number of oil-soluble and oil dispersible inhibitors were prepared to give a variety of magnesium complexes of different metal content and oil – solubility, these include;

      This work involves synthesis of different five and six member heterocyclic rings starting from acid hydrazides (m-methyl     benzoyl hydrazide and p-nitro benzoyl hydrazide) which were synthesized from their carboxylic acids.

       This work is divided into four different parts:

First part: