with primary and secondary allylic alcohols. The reactions, carried out in aqueous ethanol in the presence of palladium(II) acetate as precatalyst and sodium hydrogen carbonate as base, gave the arylation products with good overall conversion. In all cases, the major products were the β-arylated carbonyl derivatives. The o-benzene-disulfonimide was recovered in high yield from all the reactions, and it
芳烃重氮邻苯二磺酰亚胺与伯和仲烯丙醇反应。在醋酸钯 (II) 作为预催化剂和碳酸氢钠作为碱的存在下,在含水乙醇中进行的反应得到了具有良好总转化率的芳基化产物。在所有情况下,主要产物都是 β-芳基化羰基衍生物。从所有反应中以高收率回收邻苯二磺酰亚胺,并将其循环用于制备其他盐。
Solid-Phase, Multicomponent Reactions of Methyleneaziridines: Synthesis of 1,3-Disubstituted Propanones
作者:Jean-François Margathe、Michael Shipman、Stephen C. Smith
DOI:10.1021/ol051953a
日期:2005.10.1
[reaction: see text] Polymer-supported methyleneaziridines undergo ring opening by Grignard reagents under copper catalysis to yield metalloenamines which are alkylated in situ to yield ketimines. Filtration and washing of these Merrifield resin-bound intermediates prior to hydrolysis provides the corresponding 1,3-disubstituted propanones in a high state of purity without recourse to column chromatography
Palladium-Catalyzed Desulfitative Oxidative Coupling between Arenesulfinic Acid Salts and Allylic Alcohols: A Strategy for the Selective Construction of β-Aryl Ketones and Aldehydes
efficient palladium-catalyzed desulfitative oxidative coupling of sodium arylsulfinites for highly region-selective Heck-type reaction of allylicalcohols has been developed. The compatibility of the functionalities of −I, −Br, and −F would explore further postfunctionalization of the C–X bonds. This method provides a new and straightforward protocol for the synthesis of β-aryl ketones and aldehydes. The
Two efficient pathways for the synthesis of aryl ketones catalyzed by phosphorus-free palladium catalysts
作者:A. Wirwis、J. Feder-Kubis、A.M. Trzeciak
DOI:10.1016/j.mcat.2017.10.021
日期:2018.2
Allylic alcohols, 1-buten-3-ol, 1-penten-3-ol and 1-octen-3-ol, reacted with aryl iodides (iodotoluene, 4-iodotoluene, 4-iodophenol and 4-iodanisole) under Heck reaction conditions to form corresponding saturated aryl ketones in one step. The same products were obtained in a two-step tandem reaction consisted of the Heck coupling of allylic alcohols with aryl iodides, followed by hydrogenation. Reactions
Scope and Mechanism of the Ruthenium-Catalyzed Deaminative Coupling Reaction of Enones with Amines via Regioselective C<sub>α</sub>–C<sub>β</sub> Bond Cleavage
作者:Dulanjali S. Thennakoon、Marat R. Talipov、Chae S. Yi
DOI:10.1021/acs.organomet.3c00321
日期:2023.10.9
A highly regioselective C–C bond cleavage method of enones has been devised from the ruthenium-catalyzed deaminative coupling reaction with simple amines. The analogous catalytic coupling reaction of enones with anilines has led to a regioselective Cα–Cβ bond cleavage of enones in forming N-alkylanilines and 2,4-disubstituted quinolines. The reaction profile study showed the formation of a β-aminoimine