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Enantioselective Synthesis of (R)-Homoboroproline from (S)-Proline Using a Borylation Approach
被引:9
|作者:
Georgiou, Irene
[1
]
Whiting, Andrew
[1
]
机构:
[1] Univ Durham, Dept Chem, Sci Labs, Ctr Sustainable Proc, Durham DH1 3LE, England
关键词:
Aldol reactions;
Boron;
Enantioselectivity;
Amino acids;
Asymmetric synthesis;
ALPHA;
BETA-UNSATURATED CARBONYL-COMPOUNDS;
COPPER-CATALYZED BORYLATION;
ASYMMETRIC DEPROTONATIONS;
ESTERS;
REAGENTS;
BORATION;
BIS(PINACOLATO)DIBORON;
DIBORATION;
LITHIATION;
MECHANISM;
D O I:
10.1002/ejoc.201200652
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
(S)-Proline was converted through a five-step sequence into (R)-homoboroproline hydrochloride in 29?% overall yield with 97?%?ee The key step was the conversion of N-Boc iodomethylpyrrolidine into the corresponding pinacol boronate ester by an efficient copper(I)-catalyzed borylation reaction by using bispinacolatodiboron.
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页码:4110 / 4113
页数:4
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