Discussion The reaction of 3-bromopropionitrile, the appropriate alcohol, and HC1 in ether by the classical Pinner (eq 2) gave 80-95% yields of 1. However, alcoholysis of 1 provided surprising results. Instead of the expected ortho ester (2) and ammonium chloride (eq 3), the products were alkyl 3-alkoxy-(3), 3-bromo-