Gold-Catalyzed Redox Synthesis of Imidazo[1,2-<i>a</i>]pyridines using Pyridine<i>N</i>-Oxide and Alkynes
作者:Eric P. A. Talbot、Melodie Richardson、Jeffrey M. McKenna、F. Dean Toste
DOI:10.1002/adsc.201300996
日期:2014.3.10
synthesis of imidazo[1,2‐a]pyridines has been developed: catalytic dichloro(2‐pyridinecarboxylato)gold [PicAuCl2] in the presence of an acid produces a range of imidazo[1,2‐a]pyridines in good yields starting from alkynes and 2‐aminopyridine N‐oxides. This strategy is mild and foreseen to be of particular use for the installation of stereogenic centers adjacent to the imidazo[1,2‐a]pyridine ring without
已经开发出一种温和、催化、原子经济的咪唑并[1,2- a ]吡啶合成方法:催化二氯(2-吡啶羧基)金[PicAuCl 2 ]在酸存在下产生一系列咪唑并[1,2- a ]吡啶以炔烃和 2-氨基吡啶N-氧化物为起始原料,收率良好。这种策略是温和的,预计特别适用于在咪唑并[1,2- a ]吡啶环附近安装立体中心,而不损失对映体过量。
CuI-catalyzed cross-coupling of diazoacetamide with terminal alkynes: an approach to synthesizing substituted dienamides and 3-butynamides
作者:Jian Li、Dong Ding、Li Liu、Jiangtao Sun
DOI:10.1039/c3ra44801k
日期:——
A cross-coupling reaction between diazoacetamide and terminal alkynes has been developed, which provides a practical synthetic strategy for the synthesis of substituted dienamides and 3-butynamides under mild reaction conditions.
[EN] ARYLACETAMIDE ANALOGS OF PIPERAZINE-[1,2,4]TRIAZOLO[4,3-B]PYRIDAZINES<br/>[FR] ANALOGUES D'ARYLACÉTAMIDE DE PIPÉRAZINE-[1,2,4]TRIAZOLO [4,3-B]PYRIDAZINES
申请人:UNIV OF VERMONT AND STATE AGRICULTURAL COLLEGE
公开号:WO2021252505A1
公开(公告)日:2021-12-16
Provided are compounds with the following structure: Formula (I), and methods of making and using same. The methods of using the compounds may be methods for treating or prophylaxis of a cryptosporidium infection.
A unique gold(I)-catalyzed 5-endo-dig cyclization/aerobic oxidationcascade strategy from 1,5-enyne substrates with molecular oxygen as the oxidant to yield the indenone was described. The reaction mechanism was studied by heavy atom labelling and some related experiments. This method was applied to the formal total synthesis of isoprekinamycin.
Catalytic π–π Interactions Triggered Photoinduced Synthesis of Biaryls
作者:Vishal Jyoti Roy、Janardan Chakraborty、Sudipta Raha Roy
DOI:10.1021/acs.orglett.3c03806
日期:——
A highly regioselective photocatalytic method to access a variety of biaryl motifs under metal-free conditions has been developed. The organophotocatalyst is involved in π–π stacking interactions with the alkyne species, which promotes this photocatalytic process with thiophene. Mechanisticstudies have shed light on these interactions and the overall process. Along with a broad functional-group tolerance