Anti-Markovnikov Hydroamination of Unactivated Alkenes with Primary Alkyl Amines
作者:David C. Miller、Jacob M. Ganley、Andrew J. Musacchio、Trevor C. Sherwood、William R. Ewing、Robert R. Knowles
DOI:10.1021/jacs.9b08746
日期:2019.10.23
hydroamination of unactivated olefins with primary alkyl amines to selectively furnish secondary amine products. These reactions proceed through aminium radical cation (ARC) intermediates and occur at room temperature undervisiblelight irradiation in the presence of an iridium-based photocatalyst and an aryl thiol hydrogen atom donor. Despite the presence of excess olefin, high selectivities are observed for
[EN] AROMATIC OXYPHENYL AND AROMATIC SULFANYLPHENYL DERIVATIVES<br/>[FR] DERIVES D'OXYPHENYL AROMATIQUE ET DE SYLFANYLPHENYL AROMATIQUE
申请人:LUNDBECK & CO AS H
公开号:WO2004096761A1
公开(公告)日:2004-11-11
The present invention relates to compounds of formula I wherein the substituents are as defined below. The compounds of formula I are useful for the treatment of diseases such as schizophrenia, including both the positive and the negative symptoms of schizophrenia and other psychoses.
A compound of the formula
1
wherein R
1
, R
2
and R
3
are as defined above, which are inhibitors of the enzyme protein tyrosine kinases such as Janus Kinase 3 and as such are useful therapy as immunosuppressive agents for organ transplants, lupus, multiple sclerosis, rheumatoid arthritis, psoriasis, Type I diabetes and complications from diabetes, cancer, asthma, atopic dermatitis, autoimmune thyroid disorders, ulcerative colitis, Crohn's disease, Alzheimer's disease, Leukemia and other autoimmune diseases.
Syntheses of five- and seven-membered ring sultam derivatives by Michael addition and Baylis–Hillman reactions
作者:Kun Tong、Jinchang Tu、Xueyong Qi、Min Wang、Yanjie Wang、Haizhen Fu、Charles U. Pittman、Aihua Zhou
DOI:10.1016/j.tet.2012.12.083
日期:2013.3
sultam derivatives were conveniently synthesized via intra- or intermolecular Michaeladditions and an improved vinyl sulfonamide Baylis–Hillman reaction. Two different cyclization pathways were explored for the oxa-Michael reaction. A good solvent was discovered for an otherwise sluggish ketone-type Baylis–Hillman reaction in which vinyl sulfonamide ketones were used as the precursors. Furthermore,
One-Pot Synthesis of Disubstituted Urea from Carbon Dioxide, Propylene Oxide, and Amines Catalyzed by Imidazolium-Tetraiodoindate
作者:Guang Meang Son、Cong Chien Truong、Dinesh Kumar Mishra、Vivek Mishra、Yong Jin Kim
DOI:10.1002/bkcs.11363
日期:2018.2
In this article, synthesis of 1,3‐disubstituted urea (DSU) from three component reagent systems comprising amine, carbon dioxide, and propyleneoxide is described. DSU is synthesized in the presence of a variety of ionic liquids (ILs) with/without promoters. Among used ILs, 1‐butyl‐3‐methylimidazolium tetraiodoindateIII (represented as [Bmim][InI4]) is found to give the highest DSU product. A serious