Search results for "Benzaldehyde"
showing 10 items of 112 documents
Stereoselective synthesis and transformation of pinane-based 2-amino-1,3-diols
2021
A library of pinane-based 2-amino-1,3-diols was synthesised in a stereoselective manner. Isopinocarveol prepared from (−)-α-pinene was converted into condensed oxazolidin-2-one in two steps by carbamate formation followed by a stereoselective aminohydroxylation process. The relative stereochemistry of the pinane-fused oxazolidin-2-one was determined by 2D NMR and X-ray spectroscopic techniques. The regioisomeric spiro-oxazolidin-2-one was prepared in a similar way starting from the commercially available (1R)-(−)-myrtenol (10). The reduction or alkaline hydrolysis of the oxazolidines, followed by reductive alkylation resulted in primary and secondary 2-amino-1,3-diols, which underwent a reg…
Determination of Pyrrole Derivatives and Hydroxyproline with 4-(Dimethylamino)benzaldehyde in a Micellar Medium
1994
Abstract The spectrophotometric determination of pyrrole derivatives and hydroxyproline with 4-(dimethylamino)benzaldehyde (Ehrlich's reagent) in a sodium dodecyl sulphate micellar medium is studied. Pyrrole and pyrrole-2-carboxylic acid were used as model compounds for the optimization of the procedure. In the micellar medium with 0.2 M HCl at 90° C, pyrrole reacts in 15 min, whereas a HCl concentration larger than 5 M is required in the absence of the surfactant. The sensitivity increases from 1.3 to 5.6-fold with respect to the use of a non-micellar medium, for some pyrrole derivatives. The procedure is applied to the determination of hydroxyproline in meat samples.
CCDC 924213: Experimental Crystal Structure Determination
2013
Related Article: Gregorio Sanchez, Joaquin Garcia, Malva Liu, Luis Garcia, Jose Perez, Eduardo Perez,Jose L. Serrano|2013|J.Coord.Chem.|66|2919|doi:10.1080/00958972.2013.817572
CCDC 1424389: Experimental Crystal Structure Determination
2018
Related Article: Carlo Bravin, Elena Badetti, Rakesh Puttreddy, Fangfang Pan, Kari Rissanen, Giulia Licini, Cristiano Zonta|2018|Chem.-Eur.J.|24|2936|doi:10.1002/chem.201704725
CCDC 1431345: Experimental Crystal Structure Determination
2015
Related Article: Alexander Ganß, Raquel Belda, Javier Pitarch, Richard Goddard, Enrique García-España, and Stefan Kubik|2015|Org.Lett.|17|5850|doi:10.1021/acs.orglett.5b03027
CCDC 916055: Experimental Crystal Structure Determination
2013
Related Article: Veronika Ehmke, Edwin Winkler, David W. Banner, Wolfgang Haap, W. Bernd Schweizer, Matthias Rottmann, Marcel Kaiser, Céline Freymond, Tanja Schirmeister, François Diederich|2013|ChemMedChem|8|967|doi:10.1002/cmdc.201300112
CCDC 1421536: Experimental Crystal Structure Determination
2016
Related Article: Kabali Senthilkumar, Maddalena Pizzotti, Krishnan Thirumoorthy, Gabriele Di Carlo, Stefania Righetto, Alessio Orbelli Biroli, Matti Haukka, Nallasamy Palanisami|2016|J.Phys.Chem.C|120|20277|doi:10.1021/acs.jpcc.6b06364
CCDC 1514944: Experimental Crystal Structure Determination
2017
Related Article: Raul Blasco, Carmen Ramírez de Arellano, Juan F. Sanz-Cervera|2017|Org.Prep.Proced.Int.|49|265|doi:10.1080/00304948.2017.1320924
CCDC 927026: Experimental Crystal Structure Determination
2013
Related Article: Vadapalli Chandrasekhar, Sourav Das, Atanu Dey, Sakiat Hossain, Francesc Lloret, Emilio Pardo|2013|Eur.J.Inorg.Chem.||4506|doi:10.1002/ejic.201300413
CCDC 281722: Experimental Crystal Structure Determination
2006
Related Article: D.Dragancea, V.B.Arion, S.Shova, E.Rentschler, N.V.Gerbeleu|2005|Angew.Chem.,Int.Ed.|44|7938|doi:10.1002/anie.200501807