Tetrahedron Letters p. 5369 - 5372 (1989)
Update date:2022-07-29
Topics:
Huisgen, Rolf
Langhals, Elke
According to kinetic measurements,the 1,3-cycloadditions of diphenyl-diazomethane to thioketones are much faster than those to α,β-unsaturated carbonyl compounds and nitriles previously regarded as record dipolarophiles.The primary cycloadducts are tetrasubstituted 1,3,4-thiadiazolines which extrude N2 and furnish thiiranes via thiocarbonyl ylides.
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