[2+4] and [2+2] Cycloaddition Reactions
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David J. Brauer; Hans Bürger; Gottfried Pawelke; Jürgen Rothe
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Article
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2002
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John Wiley and Sons
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German
⚖ 86 KB
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N-sulfinylacylamides R-C(ϭO)-NϭSϭO react with (CF 3 ) 2 BNMe 2 (1) to form, by [2ϩ4] cycloaddition, six-membered rings cyclo-(CF 3 ) 2 B-NMe 2 -S(ϭO)-NϭC(R)-O for R ϭ Me (2), t-Bu (3), C 6 H 5 (4), and p-CH 3 C 6 H 4 (5) while N-sulfinylcarbamic acid esters R-O-C(ϭO)-NϭSϭO react with 1 to yield mixt