The base can be, for example, pyridine, dimethylaminopyridine, quinoline, {HEAD ~ trialkylamines}, and {TAIL ~ mixtures} thereof 
The base can be , for example , pyridine , dimethylaminopyridine , quinoline , { HEAD ~ trialkylamines } , and { TAIL ~ mixtures } thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL OTH