Scheme 59.
Synthesis of [8]paracyclophane via DA reaction. Reagents and conditions: (i) maleic anhydride, 3–5 h, 21%; (i) Pb(OAc)4, PhMe/pyridine, 2 h, 21%; (iii) mCPBA, 80%; (iv) HCl, 93%.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.