Abstract
Two different amino piperazine derivatives bearing various halogen groups were synthesized in high yields and explored in further transformations. Reacting these amino piperazines with various sulfonyl chlorides yielded eight different sulfonamides. Additionally, eight different urea derivatives have been prepared by treating these amino piperazines with isocyanates. Finally, we were able to take advantage of the aryl bromide functionality present in the parent amino piperazines by subjecting them to the Suzuki coupling with phenylboronic acid. Overall, we developed a strategy to diversify the amino piperazine core and obtained a small library of potentially bioactive piperazine derivatives.
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