The attempted synthesis of a dinaphth-1,6-bisdehydro[10]annulene
作者:R.H. Mitchell、F. Sondheimer
DOI:10.1016/s0040-4020(01)92792-9
日期:1970.1
Attempts to prepare the dinaphth-1,6-bisdehydro[10]annulene 3 are described. 1-Ethynyl-8-(1′-iodo-8′-naphthylethynyl)naphthalene (13) was prepared in several steps from 1,8-diethynylnaphthalene (6), making use of the trimethylsilyl protecting group. The cuprous derivative of 13 on treatment with pyridine gave zethrene (9) and 7-iodozethrene (25), instead of 3. Zethrene (9) was also obtained from the