Conversion of aromatic ketones into α-arylalkanoic acids. Part 2. Routes employing peracid, chlorine, or nitrous acid
作者:Stanley D. Higgins、C. Barry Thomas
DOI:10.1039/p19830001483
日期:——
Further methods for effecting the oxidative rearrangement of 1-arylalkanones to α-arylalkanoic esters have been investigated. It has been shown that appropriate α-iodoacetals, readily prepared from the ketones, can be converted into esters on treatment either with a peracid or with chlorine. Using the latter reagent, α-chlorination of the ester can be an unwanted side reaction with some substrates
已经研究了用于将1-芳基链烷酮氧化重排为α-芳基链烷酸酯的其他方法。已经表明,由酮容易地制备的合适的α-碘缩醛可以在用过酸或氯处理时转化为酯。使用后一种试剂,酯的α-氯化可能是与某些底物的有害副反应,并讨论了控制副产物形成的因素。已经证明,使用氯可以使该方法在碘中催化。在重氮化条件下,2-氨基-1-芳基链烷酮的缩醛也已显示出高收率的酯,这增加了关于离子ArC(OR)2 CHR'或该离子的初始形式是氢的建议。过程中的关键中间环节。