A 83/17 mixture of 1-iodo-2-butanol a and 2-iodo-1-butanol b have been prepared 5 from 1,2-oxydobutene (81% yield). After purification a and b have been subjected to Jones oxidation. The β-iodo ketone was obtained in 88%. yield from a . We were however unable to isolate the β-iodoacid from the other regioisomer. ... 13% of the α-bromoacid was isolated as his ester: nC 6 H 13 CHBrCOOCH 3 . ... Norcross RD , Von Matt P. , Kolb HC , Belluš D.