Tetrahedron p. 4447 - 4454 (1984)
Update date:2022-08-05
Topics:
Moskal, Janusz
Highly substituted 1,4-diazabutadienes react with aroyl isothiocyanates in a 1,3-dipolar cycloaddition node yielding five-membered thiohydantoin-type heterocycles.The cycloaddition is accompanied by 1,4 shift of hydrogen from a methyl group attached to C2 of the 1,4-diazabutadiene moiety.The mechanism of this reaction is discussed in comparison with similar cycloadditions with aryl isocyanates.
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Doi:10.1021/jo00377a005
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