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Synthesis 1987; 1987(3): 284-285
DOI: 10.1055/s-1987-27919
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A Novel Route to Stilbenes via Cationic Cycloaromatization

C. V. Asokan* , H. Ila, H. Junjappa
  • *Department of Chemistry, North-Eastern Hill University, Bijni Complex, Shillong 793003, Meghalaya, India
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Publikationsdatum:
12. September 2002 (online)

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A novel route for substituted stilbenes 3a-j is developed by cationic cycloaromatization of the corresponding (α-allyl-α-hydroxycinnamyl)-ketene dithioacetal derivatives 2a-j in the presence of ether-boron trifluoride complex. The hydroxydithioacetals 2a-j were obtained by 1,2-addition of allyl or crotyl magnesium bromide with the respective styryl β,β-bis(methylthio)vinyl ketones 1a-j.