The conversion of alkenes into α-iodoketones has been achieved in good yields and with high regioselectivity by means of iodohydrin formation and subsequent oxidation with 2- iodoxybenzoic acid (IBX) under mild conditions. Aromatic alkynes are also converted into their corresponding α-iodoketones under similar conditions.
[Okamoto, Tsuyoshi; Kakinami, Takaaki; Nishimura, Tetsuo; Irwan-Hermawan; Kajigaeshi, Shoji Bulletin of the Chemical Society of Japan, 1992 , vol. 65, # 6 p. 1731 - 1733]