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