Visible-Light-Induced Photoaddition of <i>N</i>-Nitrosoalkylamines to Alkenes: One-Pot Tandem Approach to 1,2-Diamination of Alkenes from Secondary Amines
作者:Dilip V. Patil、Tengda Si、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acs.orglett.1c00786
日期:2021.4.16
excitation at 453 nm. The developed visible-light-promoted photoadditionreaction of N-nitrosoamines to alkenes was combined with the o-NQ-catalyzed aerobic oxidation protocol of amines to telescope the direct handling of harmful N-nitroso compounds, where the desired α-amino oxime derivatives were obtained in a one-pot tandem N-nitrosation and photoaddition sequence.
Substrate Promiscuity of <i>ortho</i>-Naphthoquinone Catalyst: Catalytic Aerobic Amine Oxidation Protocols to Deaminative Cross-Coupling and <i>N</i>-Nitrosation
作者:Tengda Si、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acscatal.9b03442
日期:2019.10.4
been identified as versatile aerobicoxidationcatalysts. Primary amines were readily cross-coupled with primary nitroalkanes via deaminative pathway to give nitroalkene derivatives in good to excellent yields. Secondary and tertiary amines were inert to ortho-naphthoquinone catalysts; however, secondary nitroalkanes were readily converted by ortho-naphthoquinone catalysts to the corresponding nitrite
Electrochemical Nonacidic N‐Nitrosation/N‐Nitration of Secondary Amines through a Biradical Coupling Reaction
作者:Ji‐Ping Zhao、Lu‐jia Ding、Peng‐Cheng Wang、Ying Liu、Min‐Jun Huang、Xin‐Li Zhou、Ming Lu
DOI:10.1002/adsc.202000267
日期:2020.11.18
acid‐free N‐nitrosation/nitration of the N−H bonds in secondary amines with Fe(NO3)3 ⋅ 9H2O as the nitroso/nitro source through an electrocatalyzed radical coupling reaction was developed. Cyclic aliphatic amines and N‐heteroaromatic compounds were N‐nitrosated and N‐nitrated, respectively, under mild conditions. Control and competition experiments, as well as kinetic studies, demonstrate that N‐nitrosation
[EN] SUBSTITUTED 3,5-DIHYDRO-4H-IMIDAZOL-4-ONES FOR THE TREATMENT OF OBESITY<br/>[FR] 3,5-DIHYDRO-4-H-IMIDAZOL-4-ONES SUBSTITUES UTILISES DANS LE TRAITEMENT DE L'OBESITE
申请人:BAYER PHARMACEUTICALS CORP
公开号:WO2004058727A1
公开(公告)日:2004-07-15
This invention relates to substituted 3,5-dihydro-4H-imidazol-4-ones compounds which are useful in the treatment of obesity and obesity-related disorders, and as weight-loss and weight-control agents. The invention also provides methods for synthesis of the compounds, pharmaceutical compositions comprising the compounds, and methods of using such compositions for inducing weight loss and treating obesity and obesity-related disorders.
Asymmetric Transformation of <i>N</i>-Nitrosamines by Inclusion Crystallization with Optically Active Hosts
作者:Teresa Olszewska、Maria J. Milewska、Maria Gdaniec、Hanna Małuszyńska、Tadeusz Połoński
DOI:10.1021/jo001311v
日期:2001.1.1
sign corresponding to the n-pi* electronic transition. The optically active nitrosamines are configurationally labile compounds and gradually racemize in solution but they are indefinitely stable in the solid state. The first-order kinetics of the racemization in solution allowed us to assign the N-N rotation barriers by simple polarimetric measurements.