A new route to secondary amines from bis-(alkoxymethyl)-alkylamines - the activation of an aminomethyl group and protection of the product by the same functional group
作者:Martyn J. Earle、Robin A. Fairhurst、Harry Heaney、George Papageorgiou、Robert F. Wilkins
DOI:10.1016/s0040-4039(00)97589-0
日期:1990.1
variety of acidic reagents affords good yields of N-alkoxymethyl-N-alkylmethyleneiminium salts which react with trimethylsilyl enol ethers, and nucleophilic aromatic substrates to form protected secondary amines or tertiary amines by domino reactions; silyl ketene acetals afford tertiary amines only.
Parallel Kinetic Resolution of Intramolecular Furan Diels-Alder Cycloadducts via Asymmetric Hydroboration
作者:Tamara Fulgheri、Philip Cornwall、Andrew R. Turner、Joseph B. Sweeney、Duncan M. Gill
DOI:10.1002/ejoc.201901407
日期:2019.11.24
Simple, parallel and dynamic: asymmetric hydroboration reactions of racemic intramolecular Diels‐Alder furan (IMDAF) cycloadducts give regiodivergent outcomes in which simple, parallel and dynamic kineticresolutions of the substrate enantiomers may be observed. We report parallelkineticresolution of intramolecular Diels‐Alder cycloadducts, where up to five stereocentres are defined using asymmetric
Aryne cycloaddition with 3-oxidopyridinium species
作者:Hailong Ren、Chunrui Wu、Xiuxiu Ding、Xiaoge Chen、Feng Shi
DOI:10.1039/c2ob26519b
日期:——
The [3 + 2] cycloaddition of arynes with 3-oxidopyridinium species is examined using the Kobayashi benzyne precursor. The reaction affords a bicyclo[3.2.1] skeleton under mild conditions. A [7 + 2] cycloaddition mode with a subsequent pyridine ring-opening event has also been observed.
MODULATION OF CHEMOSENSORY RECEPTORS AND LIGANDS ASSOCIATED THEREWITH
申请人:Li Xiaodong
公开号:US20080306076A1
公开(公告)日:2008-12-11
The present invention provides screening methods for identifying modifiers of chemosensory receptors and their ligands, e.g., by determining whether a test entity is suitable to interact with one or more interacting sites within the Venus flytrap domains of the chemosensory receptors as well as modifiers capable of modulating chemosensory receptors and their ligands.
The use of bis(aminol) ethers derived from aliphatic primary amines in the synthesis of secondary and tertiary amines
作者:Harry Heaney、George Papageorgiou
DOI:10.1016/0040-4020(96)00026-9
日期:1996.3
prepared from primary aliphatic amines and benzylamine together with formaldehyde and either ethanol or methanol; they were reacted with electrophiles to give N-alkyl-N-alkoxymethyl-methyleneiminium salts which gave mixtures of secondary and tertiaryamines in reactions with electron rich aromatic compounds: sequential reactions with two different nucleophiles gave the expected tertiaryamines.