Achieving Enantioselectivity in Difficult Cyclohexa-1,3-diene Diels-Alder Reactions with Sulfur-Stabilized Silicon Cations as Lewis Acid Catalysts.
Achieving Enantioselectivity in Difficult Cyclohexa-1,3-diene Diels-Alder Reactions with Sulfur-Stabilized Silicon Cations as Lewis Acid Catalysts.
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使用硫稳定的硅阳离子作为路易斯酸催化剂,在困难的环六-1,3-二烯狄尔斯-阿尔德反应中实现对映选择性
DOI:
10.1021/acs.orglett.8b02945
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发表时间:
2018
期刊:
影响因子:
5.2
通讯作者:
M. Oestreich
中科院分区:
文献类型:
--
作者:
P. Shaykhutdinova;M. Oestreich
A novel cationic silicon–sulfur Lewis pair with a chiral H8-binaphthyl backbone is reported. It catalyzes otherwise sluggish Diels–Alder reactions of cyclohexa-1,3-diene and chalcone derivatives in good yields and decent enantioselectivities (up to 81% ee). The enantioinduction is highest with a [1,1′-biphenyl]-4-yl substituent at the carbonyl carbon atom. This moiety can be later converted into a carboxyl group by Baeyer–Villiger oxidation. The same oxidant also epoxidizes the double bond in the cycloadduct, and the epoxide engages in a lactonization with the carboxylic acid. Synthetically interesting hexahydro-3,6-methanobenzofuran-2(3H)-one skeletons are obtained in one pot.
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DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
Yuhki Iwade;Tetsuo Kurata;Tatsuya minami;Yasuo Hatanaka
通讯作者:
Yasuo Hatanaka
影响因子:
2.8
作者:
P. Shaykhutdinova;M. Oestreich
通讯作者:
M. Oestreich
影响因子:
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作者:
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M. Oestreich
影响因子:
15
作者:
Johannsen, M;Jorgensen, KA;Helmchen, G
通讯作者:
Helmchen, G
DOI:
--
发表时间:
1979
期刊:
影响因子:
--
作者:
R. Moriarty;T. Adams
通讯作者:
T. Adams