Neoprene (polychloroprene) is a versatile synthetic rubber. In its industrial preparation, the monomer chloroprene (2-chloro-1,3-butadiene) is ultimately derived from which simple starting material vi

Question

Neoprene (polychloroprene) is a versatile synthetic rubber. In its industrial preparation, the monomer chloroprene (2-chloro-1,3-butadiene) is ultimately derived from which simple starting material via a dimer intermediate?

Prashant Kotian · Accepted Answer

Correct answer: B. Chloroprene is manufactured from acetylene. Two molecules of acetylene dimerize in the presence of to form vinyl acetylene (). Vinyl acetylene then undergoes hydrochlorination (adds ) to form chloroprene.

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