1H-Pyrazole-1-carboxylic acid, 4-(3-bromophenyl)-, 1,1-dimethylethyl ester

1,1-Dimethylethyl 4-(3-Bromophenyl)-1H-pyrazole-1-carboxylate can be a useful intermediate in the preparation of morpholinopyrimidine derivatives as mTOR kinase inhibitors useful in the treatment of diseases mediated by mTOR kinase and/or one or more PI3K enzymes.