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2002 substitution reactions substitution reactions O 0040 21 -036 1-Nitro-2-thio(sulfonyl)alkenes in Reactions with Thiols. -Reaction of the title compounds (I) with arenethiolates (II) results in replacement of the sulfonyl group furnishing the corresponding aryl thioethers (III), which undergo exchange reaction with alkanethiolates [→(V)]. Reaction of title compounds (I) with alkanethiolates is accompanied by addition of the thiolate to the double bond furnishing thioacetals [cf. (IX)] as the major products. -(KUZ'MINA, N. V.; LIPINA, E. S.; KROPOTOVA, T. YU.; BERKOVA, G.

Amination O 0268Reactions of 2-Arylthio-and 2-Arylsulfonyl-1-nitro-1-phenylethenes with Amines. -2-Arylthio-and 2-arylsulfonyl-1-nitro-1-phenylethenes (I) react with ammonia or amines [(III), (V) or (VII)] to give the corresponding nitroenamines [(II), (IV), (VI), or (VIII), resp.] whose configuration depends on the amine structure.-(KUZ'MINA, N. V.; LIPINA, E. S.; KROPOTOVA, T. Y.; BERKOVA, G. A.; PAVLOVA, Z. F.; Russ.