The addition reactions of thebaine (1) and β-dihydrothebaine methyl ether (2) with phenylsulphonylpropadiene (3) proceed very smoothly in polar solvents to provide novel adducts (4) and (6), respectively, in good yields.
I. Fujii, K. Ryu, K. Hayakawa and K. Kanematsu, J. Chem. Soc., Chem. Commun., 1984, 844 DOI: 10.1039/C39840000844
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