“…The alternative method, which involved DCC coupling of an oxime with the corresponding carboxylic acid (catalysed by DMAP), was usually more convenient and often led directly to crystalline products without the need to resort to column chromatography (Method B). The oximes (1) chosen for investigation, which were prepared using standard methods from the corresponding aldehyde and hydroxylamine hydrochloride, were benzaldoxime, 9 4-nitrobenzaldoxime, 9 pentafluorobenzaldoxime, 10 2,4-dimethoxybenzaldoxime, 11 2,4,6trimethoxybenzaldoxime, 12 and benzophenone oxime. 9 Oxime esters 3-7a, b, e-g, i-l and 8 were prepared mainly for EPR investigations and to examine intermolecular addition, whilst 3-7c, d, and h were prepared primarily for examination of intramolecular reactions.…”