Tetrahedron Letters p. 3877 - 3878 (1983)
Update date:2022-08-05
Topics:
Ishibashi, H.
Akai, S.
Choi, H.-D.
Nakagawa, H.
Tamura, Y.
<3++2> Polar cycloaddition of a α-chloro-α-(methylthio)acetone (1) and methyl α-chloro-α-(methylthio)acetate (2) with alkynes in the presence of Lewis acid afford the furan derivative (4) and the 2-furanone derivative (6 or 8), respectively.
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