136818-14-9Relevant articles and documents
Method for preparing 1-t-butyloxycarboryl-4-[3-(alkylamino)-2-pyridyl]piperazine
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Paragraph 0072-0078, (2019/06/07)
A method for preparing 1-t-butyloxycarboryl-4-[3-(alkylamino)-2-pyridyl]piperazine belongs to the technical field of organic chemical preparation. The method comprises the following steps: mixing 1-t-butyloxycarboryl-4-(3-nitro-2-pyridyl)piperazine, a catalyst, a cocatalyst and an alkyl ketone, and adding the obtained mixture into an autoclave; sequentially replacing air in the autoclave with nitrogen and hydrogen, continuously introducing hydrogen, and carrying out a reaction; and cooling the reaction system to room temperature, filtering the obtained solution, separating out the obtained lower aqueous layer, drying the obtained upper organic layer, filtering the dried upper organic layer to remove a drying agent, carrying out distillation concentrating, and recrystallizing the obtained concentrate to obtain the target product. The 1-t-butyloxycarboryl-4-(3-nitro-2-pyridyl)piperazine used as a starting material undergoes a reductive alkylation reaction in the presence of the alkyl ketone, the catalyst and hydrogen in the same reactor to obtain the 1-t-butyloxycarboryl-4-[3-(alkylamino)-2-pyridyl]piperazine. The method has the characteristics of simplicity in operation, and high yield.
Strategy for 14C-labeling of a series of bis(heteroaryl) piperazines
Arjomandi, Omid Khalili,Saemian, Nader,Shirvani, Gholamhossein,Javaheri, Mohsen,Esmailli, Kameh
, p. 363 - 366 (2012/06/04)
Four bis(heteroaryl)piperazines labeled with carbon-14 in the 2-position of imidazole moiety were prepared as part of a 4-step (or 5-step) sequence from 5-hydroxymethyl-2-mercapto-1-benzylimida-zole-[2-14C] as a key synthetic intermediate which
Substituted indoles as anti-AIDS pharmaceuticals
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, (2008/06/13)
Substituted indoles of formula (I) STR1 are useful anti-AIDS pharmaceuticals.