... Acta Chem. ... The conditions for the alkaline hydro- lysis of 3 could be chosen so as to yield selective 764 Acta Chemica Scandinavica B40 (1986) 764—767 ester hydrolysis ... H -—9 3 ON POCl3/SOCI2 (HAN Etzo CIAN 0.5M NuOH CHZCIZ H ' o XAN I a R = Me CAN b = Bu 73 ...