One-Pot Procedure for the Synthesis of<i>N</i>-Substituted 2-(Arylmethyl)pyrrolidines from 1-Aryl-2-cyclopropylalkynes and Primary Amines by a Hydroamination/Cyclopropylimine Rearrangement/Reduction Sequence
作者:Kerstin Gräbe、Björn Zwafelink、Sven Doye
DOI:10.1002/ejoc.200900515
日期:2009.11
A one-pot procedure for the synthesis of N-substituted 2-(arylmethyl)pyrrolidines from 1-aryl-2-cyclopropylalkynes and primary amines is presented. The procedure proceeded first through an [Ind2TiMe2]-catalyzed regioselective hydroamination of a 1-aryl-2-cyclopropylalkyne with a primary amine. The resulting cyclopropylimine, which was not isolated, was then forced to undergo a cyclopropylimine rearrangement
SILICON-BASED ENERGY STORAGE DEVICES WITH FUNCTIONAL THIOPHENE COMPOUNDS OR DERIVATIVES OF THIOPHENE CONTAINING ELECTROLYTE ADDITIVES
申请人:Enevate Corporation
公开号:US20200388881A1
公开(公告)日:2020-12-10
Electrolytes and electrolyte additives for energy storage devices comprising functional thiophene compounds are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive selected from a thiophene compound.
Palladium-catalyzed dearomative allylation of indoles with cyclopropyl acetylenes: access to indolenine derivatives
作者:Chuan-Jun Lu、Yu-Ting Chen、Hong Wang、Yu-Jin Li
DOI:10.1039/d0ob02103b
日期:——
A palladium-catalyzed redox-neutral allylic alkylation of indoles with cyclopropylacetylenes has been disclosed. Various 1,3-diene indolenine framework bearing a quaternary stereocenter at the C3 position were synthesized straightforwardly in good to excellent yields with high regio- and stereoselectivities. The reaction could be further expanded to the dearomatization of naphthols to synthesize functionalized
synthesized with high diversity in three steps from arylhalides, terminal alkynes, and primary amines. The reaction sequence starts with a palladium-catalyzed coupling of an arylhalide and a terminal alkyne (Sonogashira coupling). A subsequent Cp2TiMe2-catalyzed hydroamination of the obtained alkyl(aryl)alkyne, which takes place regioselectively in the 2-position, gives access to an α-arylketimine