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Enantioselective Synthesis of Chromanones through Organocatalytic Tandem Reactions
被引:9
作者:
Lu, Mengxue
[1
,2
]
Wang, Xin
[1
,2
]
Xiong, Zongli
[1
,2
]
Duan, Jingxiang
[1
,2
]
Ren, Wen
[1
,2
]
Yao, Weijun
[3
]
Xia, Yi
[1
,2
]
Wang, Zhen
[1
,2
]
机构:
[1] Chongqing Univ, Sch Pharmaceut Sci, Chongqing 401331, Peoples R China
[2] Chongqing Univ, Chongqing Key Lab Nat Drug Res, Chongqing 401331, Peoples R China
[3] Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Peoples R China
基金:
中国国家自然科学基金;
关键词:
chiral chromanones;
enantioselective synthesis;
iminium catalysis;
1;
3-diketones;
tandem reactions;
ONE-POT SYNTHESIS;
ASYMMETRIC-SYNTHESIS;
BETA-KETOCARBONYLS;
QUINONE METHIDES;
FLAVANONES;
TRANSFORMATIONS;
STEREOCENTERS;
HYDROGENATION;
CHROMONES;
REAGENTS;
D O I:
10.1002/adsc.202001031
中图分类号:
O69 [应用化学];
学科分类号:
081704 ;
摘要:
An enantioselective approach to lactone-fused chromanone derivatives from 1-(2-hydroxyaryl)-1,3-diketones and alpha,beta-unsaturated aldehydes under mild conditions has been developed, which included organocatalytic stepwise Michael addition/ cycloketalization/hemiacetalization and followed by oxidation reaction. In the presence of chiral amine organocatalyst and an additional salicylic acid, a wide range of 1-(2-hydroxyaryl)-1,3-diketones and alpha,beta-unsaturated aldehydes were tolerated, furnishing a spectrum of lactone-fused tricyclic chromanones bearing three contiguous stereocenters in high yields with good to excellent selectivities (90->99% ee, >19:1 d.r.).
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页码:5524 / 5528
页数:5
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