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