N-trimethylsilyl-bis(trifluoromethanesulfonyl)imide: a better carbonyl activator than trimethylsilyl triflate.

Mathieu, Benoît;Ghosez, Léon
(1997) Tetrahedron Letters — Vol. 38, n° 31, p. 5497-5500 (1997)

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Abstract
N-trimethylsilyl-bis(trifluoromethanesulfonyl)imide (TMSNTf2) was readily prepared from allyltrimethylsilane and bis(trifluoromethanesulfonyl)imide. It was shown to complex carbonyl groups much more effectively than trimethylsilyl triflate. As a result, TMSNTF2 was found to be superior to TMSOTf as a catalyst for the Diels-Alder reaction of methyl acrylate with various dienes. (C) 1997 Elsevier Science Ltd.
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Mathieu, B., & Ghosez, L. (1997). N-trimethylsilyl-bis(trifluoromethanesulfonyl)imide: a better carbonyl activator than trimethylsilyl triflate. Tetrahedron Letters, 38(31), 5497-5500. https://doi.org/10.1016/S0040-4039(97)01208-2 (Original work published 1997)