Cobalt‐Catalyzed Transfer Hydrogenation of α‐Ketoesters and
<i>N</i>
‐Cyclicsulfonylimides Using H
<sub>2</sub>
O as Hydrogen Source
作者:Yang Gao、Xuexin Zhang、Ronibala Devi Laishram、Jingchao Chen、Kangkui Li、Keyang Zhang、Guangzhi Zeng、Baomin Fan
DOI:10.1002/adsc.201900636
日期:2019.9.3
A Co‐catalyzed effective transferhydrogenation of various α‐ketoesters and N‐cyclicsulfonylimides by safe and environmentally benign H2O as hydrogensource is described. The reaction used easily available and easy to handle zinc metal as a reductant. Interestingly, the catalytic system does not require ligand for reduction of N‐cyclicsulfonylimides.
A highly efficient photocatalyticaerobicoxidation of cyclic sulfamides to synthesize cyclic N-sulfonyl imines with Ir(ppy)2(dtbpy)PF6 as photocatalyst is reported. These environmentally friendly transformations exihibit good to excellent isolated yields and good generality with respect to both five-membered and six-membered cyclic sulfamides.
Energy-, time-, and labor-saving synthesis of α-ketiminophosphonates: machine-learning-assisted simultaneous multiparameter screening for electrochemical oxidation
作者:Masaru Kondo、Akimasa Sugizaki、Md. Imrul Khalid、H. D. P. Wathsala、Kazunori Ishikawa、Satoshi Hara、Takayuki Takaai、Takashi Washio、Shinobu Takizawa、Hiroaki Sasai
DOI:10.1039/d1gc01583d
日期:——
electrochemical oxidation of α-amino phosphonates with the utilization of machine-learning-assisted simultaneous multiparameter screening. After brief experimental screening, the Bayesian optimization with the experimental data (up to 12 entries) could rapidly predict the optimal conditions for the synthesis of α-ketiminophosphonates and sulfonyl ketimines with aryl and alkyl groups. The obtained α-ketiminophosphonates
Sultams: Solid phase and other synthesis of anti-HIV compounds and compositions
申请人:The University of Tennessee Research Corporation
公开号:US06353112B1
公开(公告)日:2002-03-05
Biologically active sultams are disclosed which have potent anti-HIV activity. A combinational method of synthesis, which uses a solid support and variants thereof, are described. Biological compositions and method of treating mammals for viral infections with compositions comprising the sultams of the invention, especially HIV are described.
A metal‐free method for reduction of cyclic N‐sulfonyl ketimines catalyzed by B(C6F5)3, using commercially available methylphenylsilane as a reducing reagent under mild conditions has been developed. This reductive method was effective, not only providing the expected cyclic N‐Sulfonamides in good to excellent yields, but also showing good functional‐group tolerance.
开发了一种无金属的方法,在温和的条件下,使用市售的甲基苯基硅烷作为还原剂,还原由B(C 6 F 5)3催化的环状N-磺酰基酮亚胺。这种还原方法是有效的,不仅可以提供预期的环状N-磺酰胺类化合物,而且产率很高,而且显示出良好的官能团耐受性。