52601-81-7Relevant academic research and scientific papers
Chromogenic and fluorogenic crown ether compounds for the selective extraction and determination of Hg(II)
Vaidya, Bikas,Zak, Jerzy,Bastiaans, Glenn J.,Porter, Marc D.,Hallman, Johnny L.,Nabulsi, Nabeel A. R.,Utterback, Marty D.,Strzelbicka, Bozena,Bartsch, Richard A.
, p. 4101 - 4111 (2007/10/02)
Two novel crown ether compounds, N,N′-bis(2-hydroxy-5-nitrobenzyl)-4,13-diazadibenzo-18-crown-6 (CCE) and N,N′-bis(7-hydroxy-4-methylcoumarin-8-methylene)-4,13-diazadibenzo-18- crown-6 (FCE), have been synthesized as potential reagents for the selective e
Enantiomers of 1-[(4-chlorophenyl)phenylmethyl]-4-[(4-methylphenyl) sulfonyl]piperazine
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, (2008/06/13)
Levorotatory and dextrorotatory enantiomers of 1-[(4-chlorophenyl)phenylmethyl]-4-[(4-methylphenyl)sulfonyl]piperazine of the formula STR1 their preparation and use for the preparation of substantially optically pure enantiomers of 1-[(4-chlorophenyl)phenylmethyl]piperazine, which are themselves valuable intermediate products for the preparation of optically active therapeutic compounds having a very high degree of optical purity.
Chromogenic Diaza-Crown Ether Dicarboxylic Acids for Determination of Calcium Ions
Bartsch, Richard A.,Chapoteau, Eddy,Czech, Bronislaw P.,Krzykawski, Jan,Kumar, Anand,Robison, Thomas W.
, p. 616 - 621 (2007/10/02)
The synthesis of two novel calcium chromoionophores 2 and 3, which are based on a benzodiazacrown ether with an inward-facing methoxyl group and bear two acetic acid groups and a 2,4,6-trinitroanilino chromophore, is described.Calcium and magnesium respon
Synthesis of Symmetrically Substituted Bicyclic Guanidines
Schmidtchen, Franz P.
, p. 2175 - 2182 (2007/10/02)
The symmetrically 2,2,8,8-tetraalkylsubstituted bicyclic guanidines 14a and b are prepared stereoselectively via construction of the open-chain triamines 11a and b and subsequent cyclisation.A one-pot reaction gives the unsubstituted guanidine 14c in high
