Diphenylborane. A new hydroborating agent. Synthesis of alkyldiphenylboranes and their application to the conjugate addition reaction of organoboranes
作者:Peyton Jacob
DOI:10.1016/s0022-328x(00)84868-8
日期:1978.8
Diphenylborane, prepared in situ by the reaction of methyl diphenylborinate with lithium aluminum hydride, reacts readily with olefins to provide the corresponding alkyldiphenylboranes. Diphenylborane generated by the reaction of boron trifluoride etherate with pyridinediphenylborane likewise reacts with olefins to give alkyldiphenylboranes. The latter method is suitable for the hydroboration of olefins
Terminal Olefins to Linear α,β-Unsaturated Ketones: Pd(II)/Hypervalent Iodine Co-catalyzed Wacker Oxidation–Dehydrogenation
作者:Marinus A. Bigi、M. Christina White
DOI:10.1021/ja402651q
日期:2013.5.29
Development of a mild (35 °C, no Brønsted acids) tandem Wacker oxidation-dehydrogenation of terminal olefins was accomplished using palladium(II) and hypervalentiodine co-catalysis. The reaction affords linear aryl and alkyl α,β-unsaturated ketones directly from readily available terminal olefins in good yields (average 75% per step) with excellent functional group tolerance and chemo- and stereoselectivities
使用钯 (II) 和高价碘助催化,开发了一种温和的(35 °C,无布朗斯台德酸)串联瓦克氧化-末端烯烃脱氢反应。该反应直接从易于获得的末端烯烃中得到直链芳基和烷基 α,β-不饱和酮,收率良好(每步平均 75%),具有优异的官能团耐受性以及化学和立体选择性。人们发现高价碘助催化剂对于脱氢至关重要,但作为化学计量氧化剂并不有效。
JACOB P., J. ORGANOMETAL. CHEM., 1978, 156, NO 1, 101-110