Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Diastereomeric recrystallization"'
Publikováno v:
Tetrahedron: Asymmetry. 28:1078-1082
Despite of the fact that resolution is an extremely important process in the pharmaceutical and agrochemical industries, the development of the separation of enantiomers is still based on trial-and-error experiments. In order to compare the different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8cb9b301dc699a70df207fbc4be31e9
https://doi.org/10.1016/j.tetasy.2017.07.001
https://doi.org/10.1016/j.tetasy.2017.07.001
Publikováno v:
The Journal of Organic Chemistry. 81:8464-8469
A new protocol for the enantioselective synthesis of 3,3'-disubstituted-1,1'-bi-6-methoxy-2-phenol (BIPhOL) derivatives is described. Diastereomeric resolution of racemic BIPhOL boronic acid using a boronic acid moiety as a resolving group generated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cae64ab1932ef7ddf6cc2a00e10a33d5
https://doi.org/10.1021/acs.joc.6b01645
https://doi.org/10.1021/acs.joc.6b01645
Publikováno v:
Chemical Engineering & Technology. 38:1047-1052
X-Ray diffractometry was employed to investigate the possibility of formation of non-equimolar discrete compounds in the chiral system of malic acid S- and R-enantiomers. Samples studied were mixtures of single enantiomers or an enantiomer and the va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f2525fe661924c91a4cf175c39b87e0
https://doi.org/10.1002/ceat.201400753
https://doi.org/10.1002/ceat.201400753
Publikováno v:
Chirality. 27:71-74
C2 -symmetric N,N-bis(phosphinomethyl)amines were prepared by the thermal reaction of aromatic aldehydes with ammonia and hypophosphorus acid as previously described. Both enantiomers of C2 -symmetric N,N-bis(phosphinomethyl)amine were obtained in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9112a09ca7bd27f0eae2264d02084400
https://doi.org/10.1002/chir.22391
https://doi.org/10.1002/chir.22391
Publikováno v:
Industrial & Engineering Chemistry Research. 53:15990-15999
Diastereomeric crystallization has been used to separate the racemic mixture of enantiomers of 2-methylbutanoic acid. The enantiomers have been converted into a pair of diastereomeric salts using optically pure (R)-(+)-α-methylbenzylamine as a resol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2baecccc7badb70306304379a61a010
https://doi.org/10.1021/ie501703w
https://doi.org/10.1021/ie501703w
Publikováno v:
Tetrahedron. 70:7923-7928
Solvent-induced chirality switching in the optical resolution of racemic tropic acid (TA) with (1R,2S)-2-amino-1,2-diphenylethanol has been demonstrated. Recrystallization of the diastereomeric salt mixture from i-PrOH or EtOH afforded the (S)-TA sal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b42b64b729f4e8995a44e087fbfcb251
https://doi.org/10.1016/j.tet.2014.08.053
https://doi.org/10.1016/j.tet.2014.08.053
Publikováno v:
Crystal Research and Technology. 49:514-520
Differences in physical-chemical properties of diaste-reomeric salts allow the separation into the respective salts and subsequently into enantiomers by crystallization. Within this study unusual deviations in the cation-/anion-ratio of a diastereome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a18f8d070a7d950a07e05ea731a4d5f
https://doi.org/10.1002/crat.201400105
https://doi.org/10.1002/crat.201400105
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Publikováno v:
Tetrahedron: Asymmetry. 24:796-800
The diastereomeric salts of ( R )- and ( S )-2-aminomethyl-1,4-benzodioxane with unichiral mandelic acid form a simple eutectic, whose binary phase melting point diagram shows the unique eutectic at 0.35 M ratio of the less soluble diastereomer. Such
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc2d82b5aa46bea19b1e066b53846cc4
https://doi.org/10.1016/j.tetasy.2013.05.010
https://doi.org/10.1016/j.tetasy.2013.05.010
Publikováno v:
Chemical Engineering and Processing: Process Intensification. 67:71-79
A concept for the chiral resolution of racemic compounds by a combination of chiral pre-enrichment by continuous multi-column chromatography and final purification using selective crystallization is presented. The system of serine enantiomers in wate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce455660da7e4a3205650707c8c924e2
https://doi.org/10.1016/j.cep.2012.11.002
https://doi.org/10.1016/j.cep.2012.11.002