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Another route to obtain pyrazolidine was developed. It consists of a three step mechanism, which involves, first, the sequential formation of N,N′-dichloro-1,3-diaminopropane starting from 1,3-diaminopropane and sodium hypochlorite, second, a dehydrohalogenation of the dichloro derivative leading to 1-pyrazoline and 2-pyrazoline and finally, the hydrogenation of these two derivatives in order to obtain...
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