3367-55-3

Upstream product

• 110-85-0 piperazine 
• 90-11-9 1-Bromonaphthalene 
• 90-13-1 1-Chloronaphthalene 

Relevant academic research and scientific papers

Synthesis of N-arylpiperazines from aryl halides and piperazine under a palladium tri-tert-butylphosphine catalyst

A Pd/P(t-Bu), catalyst system has revealed very high activity and selectivity for the amination of N-(hetero)aryl halides with unprotected piperazine. A wide variety of N-(hetero)arylpiperazines could be prepared using this catalyst. Turnover numbers up to 6400mol/mol have been obtained.

Nickel-catalysed selective N-arylation or N,N′-diarylation of secondary diamines

The selective synthesis of N-aryl or N,N′-diaryl piperazines and trimethylene(bis)piperidines from the corresponding diamines and aryl chlorides using a catalyst combination of Ni(0) associated to 2,2′-bipyridine is described. The Ni/2,2′-bipyridine catalyst is also effective for the sequential arylation of piperazine. The preparation of novel and unsymmetrical 1,4-diaryl piperazines is reported.