Straightforward Access to New Cage-Functionalized Sulfur Heterocycles

Abstract

Reaction of pentacyclo[5.4.0.02,6.0^3,10.0^5,8]undecane-8-thione (7) with diazomethane (9a) and 2-diazopropane (9b) afforded the 1,3,4-thiadiazolines 12a and 12c, which subsequently were used as precursors of reactive thiocarbonyl ylides 13a,b, respectively. Diphenyldiazomethane reacted rapidly with 7 to yield thiirane 14c as the final product. When decomposition of 12a or 12c was carried out in the presence of dipolarophiles, such as TCNE, DMAD or N-methylmaleinimide, new cage-functionalized heterocycles were obtained.

Key words

cage thioketones - diazo compounds - cycloaddition - spiro-heterocycles - thiocarbonyl ylides

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Romański, J.; Mlostoń, G.; Szynkiewicz, S; Linden, A., manuscript in preparation.

18

Romański, J.; Mlostoń, G.; Szynkiewicz, S; Grabowski, S., manuscript in preparation.