Abstract
A total of ten C18 fatty esters containing an azido group and another chemical function (ethylenic, bromo, epoxy, hydroxy, methoxy, acetoxy or vinyl) were synthesised from methyl ricinoleate. Methyl di- and triazidooctadecanoate were also derived from methyl oleate and ricinoleate, respectively. The azido group remained stable during the transformation of the ethylenic bond in the parent compound to the various derivatives. The azido function absorbed strongly at 2100 cm −1 (infrared) and affected the methine proton (-CHN 3-) of the chain to appear at 3.2 δ ( 1H-NMR). The mass spectral fragmentation pattern could not indicate the position of the azido group(s) in these derivatives.
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