A. Tarraga et al., Intramolecular heteroconjugate addition of heterocumulenes to alpha,beta-unsaturated carbonyl compounds promoted by the CS2/TBAF system, TETRAHEDR L, 41(25), 2000, pp. 4895-4899
We describe a new method for the preparation of dihydroquinazoline-2-thione
and 4H-3,1-benzothiazine-2-thione derivatives by intramolecular heteroconj
ugate addition of carbodiimides or isothiocyanates bearing one o-substitute
d alpha,beta-unsaturated carbonyl fragment promoted by the CS2/TBAF system.
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