Interesting differences between the protonated and sodium adducts of pentacoordinated bisaminoacylspirophosphoranes in electrospray ionization mass spectrometry
作者:Bernard Garrigues、Aurelio Munoz、Max Koenig、Michel Sanchez、Robert Wolf
DOI:10.1016/0040-4020(77)80303-7
日期:1977.1
New spirophosphoranes have been prepared by reaction of &alpha-aminoacids with tricoordinate phosphorus substrates. In one case, 1i, an equilibrium chain-cycle PIIIPv has been observed.
通过α-氨基酸与三配位磷底物的反应已制备了新的螺正膦。在一种情况1i中,已经观察到平衡链循环P III P v。
N-formylation of amino carboxylates with alkyl formates
申请人:W. R. Grace & Co.-Conn.
公开号:US04801742A1
公开(公告)日:1989-01-31
Formylating the amino nitrogen of an alkali metal salt of an amino carboxylic acid, by reacting the salt with an alkyl formate in an alkanol solvent. In one embodiment, the alkyl formate is added to the reaction as such; in another embodiment, the alkyl formate is formed in situ by reaction of carbon monoxide with the alkanol solvent in the presence of the alkali metal salt of the amino carboxylic acid. The process provides a new class of compounds, the alkali metal salts of N-formyl-aspartic acids.
Continuous Reductive Amination of Biomass-Derived Molecules over Carbonized Filter Paper-Supported FeNi Alloy
作者:Gianpaolo Chieffi、Max Braun、Davide Esposito
DOI:10.1002/cssc.201500804
日期:2015.11
This paper reports the continuousreductiveamination of different molecules, including biomass‐related compounds, over carbon‐supported FeNi nanoparticles obtained on the basis of inexpensive and abundant metal precursors and cellulose. A biorefinery case study for the preparation of pyrrolidones via acid‐catalyzed hydrolysis of glucose followed by reductiveamination of the obtained levulinic acid