2,2-Dialkyl-3,4-dimethyl-5-phenyloxazolidines and 2-alkyl-2-aryl-3,4-dimethyl-5-phenyloxazolidines are formed with high diastereoselectivity from ketones and pseudoephedrine or ephedrine in the presence of scandium triflate and 4 A molecular sieves.
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Univ Liverpool, Dept Chem, Robert Robinson Labs, Liverpool L69 7ZD, Merseyside, EnglandUniv Liverpool, Dept Chem, Robert Robinson Labs, Liverpool L69 7ZD, Merseyside, England
Henry, Neil
O'Neil, Ian A.
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Univ Liverpool, Dept Chem, Robert Robinson Labs, Liverpool L69 7ZD, Merseyside, EnglandUniv Liverpool, Dept Chem, Robert Robinson Labs, Liverpool L69 7ZD, Merseyside, England
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UNIV MILAN,CNR,CTR STUDIO SOSTANZE ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALYUNIV MILAN,CNR,CTR STUDIO SOSTANZE ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALY
BERNARDI, A
CAVICCHIOLI, M
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UNIV MILAN,CNR,CTR STUDIO SOSTANZE ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALYUNIV MILAN,CNR,CTR STUDIO SOSTANZE ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALY
CAVICCHIOLI, M
POLI, G
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UNIV MILAN,CNR,CTR STUDIO SOSTANZE ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALYUNIV MILAN,CNR,CTR STUDIO SOSTANZE ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALY
POLI, G
SCOLASTICO, C
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SCOLASTICO, C
SIDJIMOV, A
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UNIV MILAN,CNR,CTR STUDIO SOSTANZE ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALYUNIV MILAN,CNR,CTR STUDIO SOSTANZE ORGAN,DIPARTIMENTO CHIM ORGAN & IND,I-20133 MILAN,ITALY