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Enantiomeric excess determinations

Derivatization and enantiomeric excess determination of 1,2-diaminocyclohexane A 13 x 100-mm test tube is charged with 25 mg of the... [Pg.2]

Single-Step Method for Enantiomeric Excess Determination of Amino... [Pg.276]

Enantiomeric excess determined by integration of the H-NMR spectrum with (R)-BINOE at 253 K in CDCI3. [Pg.301]

Derivatization and enantiomeric excess determination of 1,2-diaminocyclohexane A 13 x 100-mm test tube is charged with 25 mg of the diammonium tartrate salt, 1.5 mL of methylene chloride (CH2CI2), and 0.5 mL of 4 N aqueous sodium hydroxide. The two phases are mixed thoroughly for 30 sec using a vortex mixer, then m-toluoyl chloride (50 pL) is added and the two phases are mixed... [Pg.2]

Salvadori, R, Uccello-Barretta, G. and Lazzaroni, R. (1990) A new method for the enantiomeric excess determination of chiral trisubstituted allenes by 195Pt NMR of traKi-dichloro[(S)-a-methylbenzylamine](allene)platinum(II) complexes. /. Chem. Soc. Chem. Commun., 1121-1123. [Pg.65]

Enantiomeric excess determination performed by Mesher analysis and literature comparison. [Pg.614]

Epoxidation conditions Iminium salt (5 mol%), Oxone (2 equiv), Na2CO3 (4 equiv), MeCN H2O (1 1), 0 "C, 2 h. Enantiomeric excess determined by NMR with Eu(hfc)3 (0.1 mol equiv) as chiral shift reagent or by Chiral HPLC on a Chiracel OD column. [Pg.195]

Enantiomeric excess determined by NMR with (+)-Eu(hfc)3 (0.1 mol equiv) as chiral shift reagent. [Pg.202]

Enantiomeric excess determined b Chiral HPLC on a Chiracel OD column. [Pg.211]

Enantiomeric excess, determined after conversion of the alkoxysilanes to a trisubstituted silane. [Pg.69]

S = solvent. Ligands DIOP = 2,3-0-isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane47 NMDPP = neomenthyldiphenylphosphine MDPP = menthyldiphenylphosphine48. b Enantiomeric excess, determined after conversion of the alkoxysilane to a trisubstituted silane. [Pg.317]

D. M. Bailey, A. Hemiig, V. D. Uzunova, W. M. Nau, Supramolecular tandem enzyme assays for multiparameter sensor arrays and enantiomeric excess determination of amino acids, Chem. Eur. 2008, 14, 6069-6077. [Pg.360]

The analysis for enantiomeric excess determination is performed as follows reaction of the sample with a 20-fold excess of an equimolecular amount of acids 188a and 188b in the presence of DCC and a catalytic amount of DMAP for alcohols, whereas catalytic amount of 1-hydroxybenzotriazole was used for amines. After work-up, the esters or amides produced were analysed by ESI-MS. The knowledge of y and s gives the ee of the sample. [Pg.64]

Optical purity (enantiomeric excess) determination Nuclear magnetic resonance (optional)... [Pg.255]

See other pages where Enantiomeric excess determinations is mentioned: [Pg.28]    [Pg.76]    [Pg.83]    [Pg.136]    [Pg.301]    [Pg.585]    [Pg.99]    [Pg.605]    [Pg.74]    [Pg.176]    [Pg.406]    [Pg.494]    [Pg.1962]    [Pg.210]    [Pg.211]    [Pg.211]    [Pg.214]    [Pg.219]    [Pg.594]    [Pg.111]   
See also in sourсe #XX -- [ Pg.78 , Pg.92 , Pg.95 ]

See also in sourсe #XX -- [ Pg.55 ]

See also in sourсe #XX -- [ Pg.86 ]

See also in sourсe #XX -- [ Pg.78 , Pg.92 , Pg.95 ]

See also in sourсe #XX -- [ Pg.33 ]



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