Tetrahedron Letters p. 4797 - 4800 (1984)
Update date:2022-07-29
Topics:
Chmielewski, M.
Kaluza, Z.
Belzecki, C.
Salanski, P.
Jurczak, J.
<2+2> Cycloaddition of toluene-4-sulphonyl isocyanate to glycals 1-4 at room temperature under 10 kbar pressure gave respective β-lactams 5-8 in good yields.The reaction proceeds regio- and stereospecifically to afford the four-membered ring in position trans to the acetoxy group at C-3 of the glycal moiety.
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