1999 ketones

ketones (benzene compounds)Q 0350

49 - 091A Convenient and Practical Route to Novel α-Allenic KetonesThrough a Wittig Reaction. — Arylketenes, generated in situ from acidchlorides (I) bearing an aryl substituent, react with phosphorane (II) to givethe desired title compounds (IV). The yields of these products are lower, if thearyl ring bears an electron-donating substituent. The above reaction fails inthe preparation of alkylketenes. — (KUMAR, K.; KAUR, S.; ISHAR, M. P.S.; Synlett (1999) 8, 1237-1238; Dep. Pharm. Sci., Guru Nanak Dev Univ.,Amritsar 143 005, India; EN)

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