Search Results - "Candeias, Sara X"
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Synthesis of α-amino esters by dynamic kinetic resolution of α-haloacyl imidazolidinones
Published in Tetrahedron (23-07-2001)“…Dynamic kinetic resolution of α-haloacyl imidazolidinones with a variety of nitrogen and carbon nucleophiles has been achieved with selectivities up to 100%…”
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Rationalising diastereoselection in the dynamic kinetic resolution of α-haloacyl imidazolidinones: a theoretical approach
Published in Tetrahedron (23-07-2001)“…A new model for the rationalisation of previously reported DKR results is presented. The proposed model is based both on experimental and molecular modelling…”
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Caffeine Content of Retail Market Coffee in Portugal
Published in Food analytical methods (01-12-2009)“…How much caffeine does one ingest when drinking a simple cup of coffee in Portugal? The study presented herein tried to answer this question through the…”
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Rationalising diastereoselection in the dynamic kinetic resolution of α-haloacyl imidazolidinones
Published in Tetrahedron letters (09-04-1998)“…A crossover from S N2 to general base catalysed nucleophilic substitution can account for the dichotomous diastereoselectivity observed in DKR reactions of…”
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A PRACTICAL METHOD FOR THE ACYLATION OF 2-IMIDAZOLIDINONE AND 2-OXAZOLIDINONE CHIRAL AUXILIARIES WITH 2- BROMOACYL HALIDES
Published in Synthetic communications (01-01-2001)“…Optimised conditions for the acylation of (S)-4-(1-methylethyl)-oxazolidin-2-one 4, (R)-4-phenyloxazolidin-2-one 5 and 4-(R),…”
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Novel acid catalysed 1,4-addition-type ring-opening polymerisation of cyclic phosphorimidates
Published in Tetrahedron letters (1999)“…New phosphorus containing oligomeric compounds of general formula (NR 1CH 2CHR 2OP(O)R) n, analogous to polypeptides, were isolated and characterised. These…”
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