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An efficient and flexible method for the preparation of silyl nitronates is described (see 1–10 ). NMR. spectral investigations indicate a rapid 1,3‐silyl migration process, with an activation energy of about 10 kcal mol −1 . X‐ray crystallographic studies on the silyl nitronates 3 and 8 show structures that lean towards an S N 2 retention pathway at silicon.
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Colvin et al. (1980) studied this question.
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