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2005
Furan derivatives
R 0060
[3 + 2] Cycloaddition Reactions of Cyclopropylmethylsilanes and α-Keto Aldetrans- and cis-Selective Formation of 2-Silylmethyltetrahydrofurans. —
37- 104 hydes:
Interestingly, the relative stereochemistry of products (III)/(IV) depends on the reaction
temperature. While trans-tetrahydrofurans (III) are obtained with excellent selectivity
at 0 °C, the corresponding cis-derivatives are formed only with moderate diastereomeric excess at -78 °C. — (FUCHIBE, K.; AOKI, Y.; AKIYAMA*, T.; Chem. Lett.
34 (2005) 4, 538-539; Dep. Chem., Fac. Sci., Gakushuin Univ., Toshima, Tokyo 171,
Japan; Eng.) — M. Paetzel
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