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- W2017007040 endingPage "1861" @default.
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- W2017007040 abstract "Cu(salen) complex 1 was found to be a versatile catalyst for the asymmetric alkylation of a range of enolates derived from α-amino acids, leading to α,α-disubstituted amino acids. The enantioselectivity of the process decreases as the size of the amino acid sidechain increases, but functionalized amino acids such as allylglycine and aspartic acid are substrates for the process. Benzylic bromides are found to be more enantioselective alkylating agents than propargylic bromides. As an example of the utility of this chemistry, an α-propargylic allylglycine derivative is prepared and subjected to ene–yne metathesis using Grubbs' catalyst to give a non-racemic cyclopentenyl amino acid." @default.
- W2017007040 created "2016-06-24" @default.
- W2017007040 creator A5014755314 @default.
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- W2017007040 creator A5053714721 @default.
- W2017007040 creator A5068892597 @default.
- W2017007040 creator A5078509563 @default.
- W2017007040 date "2004-02-01" @default.
- W2017007040 modified "2023-10-16" @default.
- W2017007040 title "Copper(II)salen catalysed, asymmetric synthesis of α,α-disubstituted amino acids" @default.
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