Lewis Base–Boryl Radicals Enabled the Desulfurizative Reduction and Annulation of Thioamides
摘要:
A new protocol for radical transformations of thioamides promoted by Lewis base-boryl radicals is reported. The desulfurizative reduction to access organic amines was enabled utilizing 4-dimethylaminopyridine-BH3 as the boryl radical precursor and PhSH as the polarity reversal catalyst. Alternatively, the chain process for unsaturated thioamides was switched to an annulation reaction using N-heterocyclic carbene BH3 as the boryl radical precursor and sterically bulky Ph3CSH as the catalyst, allowing for the construction of N-heterocyclic and carbocyclic skeletons.
[EN] SOMATOSTATIN RECEPTOR ANTAGONIST COMPOUNDS AND METHODS OF USING THE SAME<br/>[FR] COMPOSÉS ANTAGONISTES DU RÉCEPTEUR DE LA SOMATOSTATINE ET PROCÉDÉS D'UTILISATION ASSOCIÉS
申请人:CDRD VENTURES INC
公开号:WO2017136943A1
公开(公告)日:2017-08-17
The present invention is directed to somatostatin receptor antagonist compounds having the structure of Formula I, compositions comprising the same, and methods of using such compounds and compositions. The compounds may be useful in the prevention or treatment of hypoglycemia.
作者:W. Russell Bowman、Peter T. Stephenson、Nicholas K. Terrett、Adrian R. Young
DOI:10.1016/0040-4020(95)00412-2
日期:1995.7
Radical cyclisation of sp3 carbon-centred radicals onto imines and hydrazones provides a new method for the synthesis of 5- and 6-membered ring nitrogen heterocycles. Cyclisation onto the electrophilic carbon of the C=N group and 5-exo stereoelectronic selectivity are the dominating mechanistic parameters. The C-centred radical intermediates were generated from benzeneselenyl precursors using Bu3SnH
Copper-Catalyzed Selective Oxidative Acylation of Secondary Anilines with Ethyl Glyoxalate: Domino Synthesis of Indoline-2,3-diones
作者:Tao Liu、Haijun Yang、Yuyang Jiang、Hua Fu
DOI:10.1002/adsc.201300044
日期:2013.4.15
A novel, easy and useful copper‐catalyzed selective acylation of secondary anilines with ethylglyoxalate has been developed, and the corresponding indoline‐2,3‐dione derivatives were prepared. The procedure comprises the sequential intermolecular copper‐catalyzed selective oxidative ortho‐site aromatic acylation of the NH group in secondary anilines and intramolecular nucleophilic attack of the NH
HIGHLY-FLUORESCENT AND PHOTO-STABLE CHROMOPHORES FOR WAVELENGTH CONVERSION
申请人:RACHWAL Mila
公开号:US20150340519A1
公开(公告)日:2015-11-26
The invention provides highly fluorescent materials comprising a single (i=0) or a series (i=1, 2, etc.) of heterocyclic systems. The chromophores are particularly useful for absorption and emission of photons in the visible and near infrared wavelength range. The photo-stable highly luminescent chromophores are useful in various applications, including in wavelength conversion films. Wavelength conversion films have the potential to significantly enhance the solar harvesting efficiency of photovoltaic or solar cell devices.
Merging Photoinduced Iron-Catalyzed Decarboxylation with Copper Catalysis for C–N and C–C Couplings
作者:Ni Xiong、Yang Li、Rong Zeng
DOI:10.1021/acscatal.2c05293
日期:2023.2.3
dual-catalytic strategy for the radical decarboxylation functionalization of aliphatic carboxylic acids. The photoinduced ligand-to-iron charge transfer process under light was initially occurred to generate an unstabilized alkyl radical, and the copper catalyst delivered the radical and enabled the subsequent coupling reactions to form C–N or C–C bonds. By merging iron-catalyzed decarboxylation with copper catalysis