Philip C. Bulman Page and Monique B. van Niel
J. Chem. Soc., Chem. Commun., 1987, 43-44
DOI:
10.1039/C39870000043,
Paper
Aminoketene dithioacetals react with α,β-unsaturated ketones to give δ-diketones which undergo Robinson annelation to provide monoacetals of cyclohex-2-ene-1,4-diones in up to quantitative yields.
