Generation of metalloenamines by carbon–carbon bond formation: ring opening reactions of 2-methyleneaziridines with organometallic reagents
作者:Jerome F. Hayes、Michael Shipman、Heather Twin
DOI:10.1039/b005623p
日期:——
Ringopening of 2-methyleneaziridines with Grignard reagents in the presence of CuI yields metalloenamines in a regiospecific fashion which can be further reacted with electrophiles to produce functionalised ketones via a one-pot process.
在 CuI 存在下用格氏试剂开环 2-亚甲基氮丙啶以区域特异性方式产生金属烯胺,该金属烯胺可以进一步与亲电试剂反应,通过一锅法生产官能化酮。
Arenediazonium <i>o</i>-Benzenedisulfonimides in Heck-Type Arylation of Allylic Alcohols
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。
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
Palladium-Catalyzed Oxidative Nonclassical Heck Reaction of Arylhydrazines with Allylic Alcohols via C–N Bond Cleavage: Access to β-Arylated Carbonyl Compounds
作者:Xiaoshuo Wang、Xiaojing Wang、Hongwu Pan、Xiayi Ming、Zhenming Zhang、Tao Wang
DOI:10.1021/acs.joc.2c01115
日期:2022.8.5
An efficient palladium-catalyzed oxidative nonclassical Heck reaction of arylhydrazines with allylic alcohols via C–N bond cleavage has been successfully developed. This method provides a series of β-arylated carbonyl compounds with broad functional group tolerance under base-free, simple, and mild open air reaction conditions. In the reaction, arylhydrazines with the smaller molecular weight of the