Palladium-Catalyzed Acylation Reactions: A One-Pot Diversified Synthesis of Phthalazines, Phthalazinones and Benzoxazinones
作者:Basuli Suchand、Gedu Satyanarayana
DOI:10.1002/ejoc.201800159
日期:2018.5.24
proceeds through [Pd]‐catalyzed acylation and nucleophilic cyclocondensation with dinucleophilic reagents. This process was based on direct coupling with simple bench‐top aldehydes without the assistance of directing group and without activating the carbonyl group. The process is highly advantageous because it employs simple nitrogen‐based nucleophiles, and non‐toxic and readily accessible aldehydes as the
Cu(I)-Catalyzed Coupling and Cycloisomerization of Diazo Compounds with Terminal Yne-Alkylidenecyclopropanes: Synthesis of Functionalized Cyclopenta[<i>b</i>]naphthalene Derivatives
作者:Peng-Hua Li、Liu-Zhu Yu、Xiao-Yu Zhang、Min Shi
DOI:10.1021/acs.orglett.8b01812
日期:2018.8.3
cycloisomerization of diazo compounds with terminal yne-alkylidenecyclopropanes (ACPs) has been presented. This reaction starts from the formation of an allenic intermediate in the Cu(I)-catalyzed cross-coupling reaction of a diazo compound with terminalalkyne in yne-tethered ACP and then undergoes a domino cycloisomerization of a 6π-electrocyclization and cyclopropane ring-opening rearrangement to give functionalized
提出了Cu(I)催化重氮化合物与末端炔基-亚烷基亚环丙烷(ACP)的偶联和环异构化。该反应从在重氮系ACP的重氮化合物与末端炔烃的Cu(I)催化的交叉偶联反应中形成烯丙基中间体开始,然后经历6π电环化和环丙烷开环的多米诺环异构化在温和的条件下重排得到中等至极好的收率的官能化的环戊[ b ]萘衍生物。
Synthesis, characterisation, and reactivity of novel pseudocyclic hypervalent iodine reagents with heteroaryl carbonyl substituents
containing furan and thiophene moieties in addition to a carbonyl group in the vicinity of the iodine atom were synthesised and characterised. The X-ray analysis of both compounds revealed a strong intramolecular contact between the carbonyl oxygen and the hypervalent iodine atom with tosylate as a counter ion. The two reagents showed a broad range of syntheticapplications and proved to be versatile oxidizing
Palladium-Catalyzed Direct Oxidative Coupling of Iodoarenes with Primary Alcohols Leading to Ketones: Application to the Synthesis of Benzofuranones and Indenones
investigated, utilizing readily available primary alcohols as acylating sources. Overall, this oxidative coupling proceeds via three distinct transformations such as oxidation, radical formation, and cross-coupling in one catalytic process. This protocol does not involve the assistance of a directing group or activation of the carbonyl group by any other means. Furthermore, this reaction made use of no
Palladium-Catalyzed Acylations: One-Pot Synthesis of Indenones
作者:Basuli Suchand、Gedu Satyanarayana
DOI:10.1021/acs.joc.6b02453
日期:2017.1.6
An efficient, one-potsynthesis of substituted indenones was accomplished starting from simple o-iodoketones and aldehydes. [Pd]-catalyzed direct acylation of o-iodoketones with aldehydes was employed as the key step. Subsequent intramolecularaldolcondensation afforded the indenones. Notably, a variety of indenones were achieved. Significantly, the natural product neolignan was accomplished in one