Then the orthoester is converted in high yields to the corresponding imidic ester by condensation with an aniline while simultaneously removing alkanol from {HEAD ~ the reaction mixture} to drive {TAIL ~ the equilibrium reaction} to completion 
Then the orthoester is converted in high yields to the corresponding imidic ester by condensation with an aniline while simultaneously removing alkanol from { HEAD ~ the reaction mixture } to drive { TAIL ~ the equilibrium reaction } to completion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH