Total syntheses of angular [7]-, [8]-, and [9]phenylene by triple cobalt-catalyzed cycloisomerization: remarkably flexible heliphenes.
Han
Sangdon
S
Center for New Directions in Organic Synthesis, Department of Chemistry, University of California at Berkeley and the Chemical Sciences Division, Lawrence Berkeley National Laboratory, CA 94720-1460, USA.
Anderson
D Ryan
DR
Bond
Andrew D
AD
Chu
Hiufung V
HV
Disch
Raymond L
RL
Holmes
Daniel
D
Schulman
Jerome M
JM
Teat
Simon J
SJ
Vollhardt
K Peter C
KP
Whitener
Glenn D
GD