Importance of steric effects in the [4 + 2] cycloaddition of 5-substituted pentamethylcyclopentadienes
作者:Waldemar Adam、Ulrike Jacob、Michael Prein
DOI:10.1039/c39950000839
日期:——
Pentamethylcyclopentadienes with a carbon substituent (X = Pri, Et, CH2OH, CHO) at the C-5 position give anti cycloadducts with a variety of dienophiles, which establishes the importance of stericeffects in the [4 + 2] cycloaddition of these plane-nonsymmetric dienes.