Process for preparing triazole substituted azaindoleoxoacetic piperazine derivatives and novel salt forms produced therein

A process for preparing compound H having the structure

• which comprises
• a) treating compound G of the structure
• with a compound of the structure Ga
• and potassium phosphate dibasic K2HPO4 to form compound H;
• or
• b) treating compound G with methylsulfonyl hydrazide
• and 2,2-dimethoxyacetaldehyde f
• and K3PO4, to form compound H,
• wherein in option a) the reaction is carried out at a temperature within the range from about 60 to about 120° C., and in option b) the reaction is carried out at a temperature within the range from about 60 to about 100° C. and
• wherein compounds H and G, R2 is F, R18 is H and R3 is H and
• wherein option a) and option b) are each carried out in the presence of acetonitrile/dimethylacetamide.