Macro Rings. XXIX. Stereochemistry of a 1, 6-Cycloaddition Reaction

DJ Cram, CK Dalton, GR Knox

文献索引：Cram,D.J. et al. Journal of the American Chemical Society, 1963 ,  vol. 85, p. 1088 - 1093            

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被引用次数: 59

摘要

II! l52).(8) HE Winberg. FS Fawcett, WE Mochel and CW Theobald, J. A m. Chem. Soc., 84, 1428 (1960) phane, and at c to syn-11. The last possibility (attack at c) can be ruled out on steric grounds. Molecular models indicate that the transannular methylene groups badly crowd position c. On an electronic basis, attack at b is preferred over a. The transannular ring is undoubtedly less activated by the methylene groups than the ring to which they are ...