Gold(I)-Catalyzed Intra- and Intermolecular Alkenylations of β-Yne-pyrroles: Facile Formation of Fused Cycloheptapyrroles and Functionalized Pyrroles
作者:Bin Pan、Xiaodong Lu、Chunxiang Wang、Yancheng Hu、Fan Wu、Boshun Wan
DOI:10.1021/ol500744k
日期:2014.4.18
An efficient gold(I)-catalyzed alkenylation of β-alkyne-substituted pyrroles is reported. The intramolecular reaction gives straightforward access to different types of seven-membered-ring-fused pyrroles with endo-selectivity, and the intermolecular reaction with alkynes provides functionalized pyrrole derivatives.
Nickel-catalyzed [3 + 2] cycloaddition of diynes with methyleneaziridines via C–C bond cleavage
作者:Bin Pan、Chunxiang Wang、Dongping Wang、Fan Wu、Boshun Wan
DOI:10.1039/c3cc41061g
日期:——
A Ni-catalyzed [3 + 2] cycloaddition via CâC bond cleavage of methyleneaziridines under mild conditions was developed. This reaction gave substituted pyrroles with excellent regioselectivity and a pendant alkyne unit, which is advantageous for further derivatization.
在温和的条件下,开发出了一种通过 CâC 键裂解亚甲基氮丙啶的 Ni 催化 [3 + 2] 环加成反应。该反应生成的取代吡咯具有极佳的区域选择性和一个悬垂炔烃单元,有利于进一步衍生。
Observations on the ring opening reactions of 2-methyleneaziridines with acid chlorides and alkyl chloroformates
作者:David S. Ennis、Julie Ince、Sabitur Rahman、Michael Shipman
DOI:10.1039/b002223n
日期:——
of 1-alkyl-2-methyleneaziridines react with alkylchloroformates (MeO2CCl, PhCH2O2CCl) or acid chlorides (AcCl, p-NO2C6H4COCl) at room temperature in nonpolar solvents (CH2Cl2, THF, toluene) to produce ring opened enamide products in moderate to good yields. Mechanistic studies using 3-deuterio-N-(1-phenylethyl)-2-methyleneaziridine suggest the reactions proceed by initial N-acylation to form the corresponding
多种1-烷基-2-亚甲基氮丙啶在室温下与烷基氯甲酸酯(MeO 2 CCl,PhCH 2 O 2 CCl)或酰氯(AcCl,p -NO 2 C 6 H 4 COCl)反应溶剂(CH 2 Cl 2,THF,甲苯)产生开环 烯酰胺产品产量中等至良好。机械研究使用3-氘-N-(1-苯乙基)-2-亚甲基氮丙啶 建议反应首先进行 N-酰化 形成相应的叠氮基 阳离子(例如27),随后在sp 3杂交时通过氯离子进行区域特异性开环氮丙啶 碳原子产生观察到的产物。
Palladium-catalyzed hydrocarbonation of methyleneaziridines with carbon pronucleophiles
作者:Byoung Ho Oh、Itaru Nakamura、Yoshinori Yamamoto
DOI:10.1016/s0040-4039(02)02410-3
日期:2002.12
The reaction of methyleneaziridine 1 with carbon pronucleophiles (2, H-CR3) proceeds smoothly in the presence of a palladium catalyst affording the corresponding hydrocarbonation products 5 in good to high yield.
Synthesis of Pyridinylpyrrole Derivatives via the Palladium-Catalyzed Reaction of Acetylpyridines with Methyleneaziridines
作者:Amal I. Siriwardana、Kalum K. A. D. S. Kathriarachchi、Itaru Nakamura、Ilya D. Gridnev、Yoshinori Yamamoto
DOI:10.1021/ja0455401
日期:2004.11.1
methyleneaziridines with o-, m-, and p-acetylpyridines proceeds very smoothly in the presence of a palladium catalyst, affording the biologically very important o-, m-, and p-pyridinylpyrrole derivatives in good to high yields. Not only ortho, meta, and para, but also related substrates, such as acetyl aromatics and hetarenes, can be used as the starting acetyl derivatives to synthesize related compounds to pyridinylpyrrole