The product is isolated by liquid chromatography through celite and {HEAD ~ the solvent} removed in {TAIL ~ vacuo} 
The product is isolated by liquid chromatography through celite and { HEAD ~ the solvent } removed in { TAIL ~ vacuo }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL