95637-75-5Relevant academic research and scientific papers
CONJUGATED SCHIFF'S BASES.20. CYCLOADDITION OF HETEROCUMULENES TO SOME 1,3-HETERODIENES INVOLVING UNUSUAL ASSISTANCE OF METHYL GROUP
Moskal, Janusz
, p. 4447 - 4454 (2007/10/02)
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.
