ortho-Lithiophenyl Isocyanide: A Versatile Precursor for 3H-Quinazolin-4-ones and 3H-Quinazolin-4-thiones
摘要:
ortho-Lithiophenyl isocyanide has been generated from ortho-bromophenyl isocyanide and successfully employed toward the synthesis of 2-substituted phenyl isocyanides as well as 2,3-disubstituted 3H-quinazoline-4-ones and 3H-quinazolin-4-thiones.
Certain pyrazoline derivatives with kinase inhibitory activity
申请人:Adams Ruth S.
公开号:US20080171754A1
公开(公告)日:2008-07-17
The present invention provides certain pyrazoline compounds useful as inhibitors of protein kinases. The invention also provides pharmaceutical compositions and methods of using the compositions in the treatment of various diseases.
Silver-Catalyzed Cross-Coupling of Isocyanides and Active Methylene Compounds by a Radical Process
作者:Jianquan Liu、Zhenhua Liu、Peiqiu Liao、Lin Zhang、Tao Tu、Xihe Bi
DOI:10.1002/anie.201504254
日期:2015.9.1
Isocyanides are versatile building blocks, and have been extensively exploited in CH functionalization reactions. However, transition‐metal‐catalyzed direct CH functionalization reactions with isocyanides suffer from over‐insertion of isocyanides. Reported herein is a radical coupling/isomerization strategy for the cross‐coupling of isocyanides with activemethylenecompounds through silver‐catalysis
1,3-benzoselenazoles having a heteroatom substituent such as NRR‘, OR, and SR groups at the 2-position was developed by the copper(I)-catalyzed reaction of 2-bromophenyl (1) or 2-iodophenyl (2) isocyanides with selenium and heteroatom nucleophiles. In addition, the synthesis of 2-amino-1,3-benzotellurazoles is also described.
silver‐catalyzed chemoselective [4+2] annulation of aryl and heteroaryl isocyanides with α‐substituted isocyanoacetamides was developed for the facile and efficient synthesis of 2‐aminoquinolones, naphthyridines, and phenanthrolines. A mechanism for this multistep domino reaction is proposed on the basis of a 13C‐labeling experiment, according to which an unprecedented chemoselective heterodimerization
A novel three-component reaction between isocyanides, alcohols or thiols and elemental sulfur: a mild, catalyst-free approach towards <i>O</i>-thiocarbamates and dithiocarbamates
作者:András György Németh、György Miklós Keserű、Péter Ábrányi-Balogh
DOI:10.3762/bjoc.15.155
日期:——
new multicomponent reaction has been developed between isocyanides, sulfur and alcohols or thiols under mild reaction conditions to afford O-thiocarbamates and dithiocarbamates in moderate to good yields. The one-potreaction cascade involves the formation of an isothiocyanate intermediate, thus a catalyst-free synthesis of isothiocyanates, as valuable building blocks from isocyanides and sulfur is proposed