Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Angelo Restelli"'
Autor:
Angelo Restelli, Claudio Giordano
Publikováno v:
ChemInform. 22
For the first time it is reported that 1,5-benzothiazepines ( 1a–e ) (Figure I) behave as effective chiral solvating agents (CSA) for NMR enantiomeric excess (ee) determination of different classes of compounds such as α-arylalkanoic acids, α-hyd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f16d0c01cf7e14d5599d783a344ca090
https://doi.org/10.1002/chin.199147290
https://doi.org/10.1002/chin.199147290
Autor:
Angelo Restelli, Claudio Giordano
Publikováno v:
Tetrahedron: Asymmetry. 2:785-788
For the first time it is reported that 1,5-benzothiazepines ( 1a–e ) (Figure I) behave as effective chiral solvating agents (CSA) for NMR enantiomeric excess (ee) determination of different classes of compounds such as α-arylalkanoic acids, α-hyd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b12acd2177c81ba3d506a0a2f72669a1
https://doi.org/10.1016/s0957-4166(00)80460-7
https://doi.org/10.1016/s0957-4166(00)80460-7
Publikováno v:
Journal of Heterocyclic Chemistry. 27:1035-1039
The condensation of L-cysteine with enantiomerically pure aldehyde 2a and 2b afforded a mixture of 2-substituted thiazolidine diastereomers 1a-b and 1c-d, respectively. The present paper deals with the use of nuclear Overhauser effect (nOe) in determ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f32b2ff60e66155b23ddbff57a655748
https://doi.org/10.1002/jhet.5570270442
https://doi.org/10.1002/jhet.5570270442
Publikováno v:
ChemInform. 38
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90d0bff1757dba1f1160ac7c82c784b1
https://doi.org/10.1002/chin.200728209
https://doi.org/10.1002/chin.200728209
Publikováno v:
The Journal of Organic Chemistry. 56:2270-2272
We report a new example of the self-discrimination of enantiomers which can be conveniently used for the determination of the enantiomeric purity of 1,5-benzothiazepines by 1 H NMR methods
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::224b06167d1513b4105dbe8a8b645a5b
https://doi.org/10.1021/jo00006a064
https://doi.org/10.1021/jo00006a064
Autor:
Jay S. Siegel, Angelo Restelli
Publikováno v:
Journal of the American Chemical Society. 114:1091-1092
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79821dac85e9b304d49d238fbfea1032
https://doi.org/10.1021/ja00029a050
https://doi.org/10.1021/ja00029a050
Publikováno v:
Tetrahedron. 41:4929-4936
Enantiomerically pure P-tolyl sulphinyl-N,N-dimethylthioacetamide (1) was prepared starting from (-)-(S)-menthyl toluene-p-sulphinate. Aldol-type condensation of (1) and subsequent removal of the Sulphinyl group open an entry to optically active β-h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::555c2c77131da85b9dd468350ccd69e4
https://doi.org/10.1016/s0040-4020(01)96733-x
https://doi.org/10.1016/s0040-4020(01)96733-x
Publikováno v:
Tetrahedron. 40:3815-3822
The aldol-type condensation of enantiomerically pure α-sulphinylacetamides is described. The stereochemical outcome of the reaction mainly depends on the nature of the base used to generate the enolate. Experimental evidences allow the identificatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abced66c0ac98ccec107af8b2598d962
https://doi.org/10.1016/s0040-4020(01)88812-8
https://doi.org/10.1016/s0040-4020(01)88812-8
Publikováno v:
Helvetica Chimica Acta. 68:1217-1225
Variously substituted 4,5-dihydro-5-vinylisoxazoles, obtained by regio- and stereospecific cycloaddition of nitrile oxides to dienes, undergo smooth OsO4-catalyzed cis-hydroxylation to give amino-polyol precursors. The reaction is ‘anti’-selectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd5734269a47e124b68ad77a08e8a9f9
https://doi.org/10.1002/hlca.19850680518
https://doi.org/10.1002/hlca.19850680518
Publikováno v:
J. Chem. Soc., Chem. Commun.. :1253-1255
Aldol condensations of stereoisomerically pure 3-sulphinylmethyl-4-5-dihydroisoxazoles allow a highly stereocontrolled entry to optically active masked and un-masked β,β′-dihydroxyketones.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2628ffc93afebb642f446a8f2ec7176d
https://doi.org/10.1039/c39840001253
https://doi.org/10.1039/c39840001253