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.
A selection of pyrrole‐based and boron‐doped heterocyclic polycyclic arenes obtained by oxidative cyclization. Reaction conditions: a) DDQ (5 equiv), Sc(OTf)3 (5.6 equiv), toluene, reflux; b) PIFA (2.5 equiv), CH2Cl2, −78 °C; c) DDQ (2 equiv), Sc(OTf)3 (7 equiv), CH2Cl2, RT; d) FeCl3 (8 equiv), CH2Cl2, CH3NO2, RT; e) DDQ (2.5 equiv), TfOH, CH2Cl2, 0 °C.
