CAS 7148-07-4: 1-(1-Cyclopenten-1-yl)pyrrolidine

The reaction of 1-chloro-1-sulfide with cyclopentene in the presence of pyridine and potassium hydroxide produces 1-pyrrolidino-1-cyclopentene. The reaction is an example of a nucleophilic substitution reaction, which occurs when two molecules interact and a third molecule, which is more reactive than the other two, replaces one of the others. The reaction is thermodynamically favored because it releases heat and does not require a catalyst. This reaction proceeds via resonance stabilization of the intermediate chlorosulfonium ion by conjugation with the pyridine ring. The basic hydrolysis step can be accomplished using sodium hydroxide as a base, which breaks down the salt to generate sulfide gas and potassium chloride. This process is also efficient because it does not require much energy or time to complete.

1-Pyrrolidino-1-cyclopentene