A process 2 wherein said {HEAD ~ ring closure} is conducted using {TAIL ~ p toluenesulfonic acid} or an ester or p toluenesulfonyl halide with a tertiary amine 
is conducted using
A process 2 wherein said { HEAD ~ ring closure } is conducted using { TAIL ~ p toluenesulfonic acid } or an ester or p toluenesulfonyl halide with a tertiary amine
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH