(2S)-2-[(Phenylsulfinyl)methyl]pyrrolidine-Catalyzed Efficient Stereoselective Michael Addition of Cyclohexanone and Cyclopentanone to Nitroolefins

被引:12
|
作者
Singh, Kamal Nain [1 ]
Singh, Paramjit [1 ]
Kaur, Amarjit [1 ]
Singh, Pushpinder [1 ]
Sharma, Sandeep Kumar [1 ]
Khullar, Sadhika [2 ]
Mandal, Sanjay K. [2 ]
机构
[1] Panjab Univ, Dept Chem, Chandigarh 160014, India
[2] Indian Inst Sci Educ & Res, Dept Chem Sci, Sect 81, Mohali 140306, Punjab, India
来源
SYNTHESIS-STUTTGART | 2013年 / 45卷 / 10期
关键词
Michael addition reaction; organocatalyst; amino sulfoxide; nitroolefins; ketones; ENANTIOSELECTIVE CONJUGATE ADDITION; CYCLIC-KETONES; NITRO-MICHAEL; BIFUNCTIONAL ORGANOCATALYSTS; METHYL-ETHER; ALDEHYDES; THIOUREA; AMINE; CATALYSTS; ENAMINE;
D O I
10.1055/s-0032-1316917
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
(2S)-2-[(Phenylsulfinyl)methyl]pyrrolidine, derived from L-proline, has been demonstrated as an efficient organocatalyst for the asymmetric Michael addition of cyclohexanone and cyclopentanone to beta-nitrostyrenes. This pyrrolidine-based catalyst bearing a sulfoxide moiety was used to synthesize various gamma-nitro carbonyl compounds in high yield (up to 97%) with excellent stereoselectivity (up to >99:1 dr and >99% ee) without the use of any additive.
引用
收藏
页码:1406 / 1413
页数:8
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