A new class of ligands for aqueous, lanthanide-catalyzed, enantioselective Mukaiyama aldol reactions.

A new class of ligands for aqueous, lanthanide-catalyzed, enantioselective Mukaiyama aldol reactions.
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DOI:
10.1021/ja107197p
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发表时间:
2010-09-22
影响因子:
15
通讯作者:
Allen MJ
Allen MJ
中科院分区:
化学1区
文献类型:
--
作者:
Mei Y;Dissanayake P;Allen MJ

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The development of aqueous methods to generate enantiopure β-hydroxy carbonyl compounds is an important goal because these subunits compose many bioactive compounds, and the ability to synthesis these groups in water has environmental and cost benefits. In this communication, we report a new class of ligands for aqueous, lanthanide-catalyzed, asymmetric Mukaiyama aldol reactions to synthesize chiral β-hydroxy ketones. Furthermore, we use luminescence-decay measurements to unveil mechanistic information regarding the catalytic reaction via changes of water-coordination number. The precatalysts presented here yielded β-hydroxy carbonyls from aliphatic and aryl substrates with outstanding syn:anti ratios and enantiometric excesses of up to 49:1 and 97%.
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期刊: ORGANIC LETTERS
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