A new stabilised form of isobenzofuran, rack-mounted on an alicyclophane
作者:Ronald N. Warrener、Muhong Shang、Douglas N. Butler
DOI:10.1039/b104383h
日期:——
3-positions and incorporated into alicyclophanes have been prepared from the related furanoalicyclophane 5 in three steps (i) addition of benzyne or 4,5-bis(trimethylsilyl)benzyne (ii) hydrogenation of the pi-bond (iii) ejection of ethylene by flash vacuum pyrolysis, and shown to yet retain high 1,3-diene character and form adducts with dienophiles, e.g. dimethyl acetylenedicarboxylate or N-methyl maleimide;