Iron-Catalyzed Nitrene Transfer Reaction of 4-Hydroxystilbenes with Aryl Azides: Synthesis of Imines via C═C Bond Cleavage
作者:Yi Peng、Yan-Hui Fan、Si-Yuan Li、Bin Li、Jing Xue、Qing-Hai Deng
DOI:10.1021/acs.orglett.9b03160
日期:2019.10.18
C═C bond breaking to access the C═N bond remains an underdeveloped area. A new protocol for C═C bond cleavage of alkenes under nonoxidative conditions to produce imines via an iron-catalyzed nitrene transfer reaction of 4-hydroxystilbenes with aryl azides is reported. The success of various sequential one-pot reactions reveals that the good compatibility of this method makes it very attractive for
Microballs Containing Ni(0)Pd(0) Nanoparticles for Highly Selective Micellar Catalysis in Water
作者:Manisha Bihani、Pranjal P. Bora、Maarten Nachtegaal、Jacek B. Jasinski、Scott Plummer、Fabrice Gallou、Sachin Handa
DOI:10.1021/acscatal.9b02316
日期:2019.8.2
water, which poses a significant hindrance to their application in aqueous synthetic catalysis. To overcome these barriers, ligated Ni(0) nanoparticles (diameter <1 nm) containing a minimum amount of Pd(0) in the microballs formed of amphiphile PS-750-M are developed and applied in the highly selective carbamate cleavage. Selectivity and functional group tolerance are thoroughly investigated. Control
Potassium tert-butoxide was used for the direct synthesis of secondaryamines through a hydrogen autotransfer reaction. Control experiments were carried out to identify the reaction intermediates and the role of the K+ ion in the reaction, and DFT calculations unveiled the reaction mechanism. The reaction has wide substrate scope with high functional-group tolerance.
叔丁醇钾用于通过氢自转移反应直接合成仲胺。通过对照实验来确定反应中间体和 K +离子在反应中的作用,并通过 DFT 计算揭示了反应机理。该反应底物范围广,官能团耐受性高。
US3948939A
申请人:——
公开号:US3948939A
公开(公告)日:1976-04-06
Mild and Efficient PtO<sub>2</sub>-Catalyzed One-Pot Reductive Mono-<i>N</i>-alkylation of Nitroarenes
作者:Bojja Sreedhar、Vikas S. Rawat
DOI:10.1080/00397911.2011.561397
日期:2012.9
Abstract A mild and efficient one-pot reductive monoalkylation of nitroarenes has been described using aldehydes as alkylating agents, molecular hydrogen as a reducing agent, and PtO2 as a catalyst in methanol. This methodology is found to be applicable for both aliphatic and aromatic aldehydes and for a wide variety of nitroarenes. Supplemental materials are available for this article. Go to the publisher's