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2-Azabicyclo[2.2.1]heptane (2-azanorbornane) and 6-azabicyclo[ 3.2.1]octane (normorphan) systems represent key structural units found in a number of biologically important natural and synthetic products. See, for example, 2-azabicyclo[2.2.1]heptanes: a) C. D. Cox, J. R. Malpass, J. Gordon, A. Rosen, J. Chem. Soc. Perkin Trans. 1 2001, 2372-2379;
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for 6-azabicyclo[3.2.1]octanes, see: f D. J. Triggle, Y. W. Kwon, P. Abraham, J. B. Pitner, S. W. Mascarella, F. I. Carroll, J. Med. Chem. 1991, 34, 3164-3171;
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Symmetrical, achiral ketones like, for example, acetone and di-ethyl ketone were also pertinent substrates, leading to the expected silylated tertiary carbinol adducts in high isolated yields.
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46
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Under these conditions, silicon transfer from the donor to the acceptor partner is seemingly hampered by the carboxyalkyl group α to the ketone carbonyl group
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Under these conditions, silicon transfer from the donor to the acceptor partner is seemingly hampered by the carboxyalkyl group α to the ketone carbonyl group.
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Under these conditions, a significant amount of its γ-lactone form was also obtained
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Under these conditions, a significant amount of its γ-lactone form was also obtained.
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