Benzenemethanol, 2-fluoro-α-(nitromethyl)-, (αS)-

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CAS: 944045-55-0
MF: C8H8NO3F
MW: 185.15242
Synonyms: Benzenemethanol, 2-fluoro-α-(nitromethyl)-, (αS)-

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Jun Zhang

Institute of Chemistry, Chinese Academy of Sciences
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Li-Min Wang

East China University of Science and Technology
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Hongchao Guo

China Agricultural University
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Shangzhong Liu

China Agricultural University
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Min Wang

China Agricultural University
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Qinghua Bian

China Agricultural University
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Co-reporter: Jianyou Mao, Xin Nie, Min Wang, Qian Wang, Bing Zheng, Qinghua Bian, Jiangchun Zhong
pp: 965-971
Publication Date(Web):15 July 2012
DOI: 10.1016/j.tetasy.2012.06.014
A series of cyclopropane-based bisoxazolines were synthesized from (R)- and (S)-amino alcohols, and applied to copper-catalyzed enantioselective nitroaldol reactions between nitromethane and various aldehydes. The reactions generated β-hydroxy nitroalkanes in high yields (97%) and with good enantioselectivities (up to 87% ee). The effects of the oxazoline stereocenters constructed in the Henry reactions were also studied.Image for unlabelled figureGraphical absImg(1R,2S)-1,2-Bis[4(S)-isopropyloxazolin-2-yl]-3,3-dimethylcyclopropaneC17H28N2O2View the MathML source[α]D20=-131.3 (c 1.6, CHCl3)Source of chirality: (S)-valinolGraphical absImg(1R,2S)-1,2-Bis [4(S)-tert-butyloxazolin-2-yl]-3,3-dimethylcyclopropaneC19H32N2O2View the MathML source[α]D20=-135.8 (c 2.1, CHCl3)Source of chirality: (S)-tert-leucinolGraphical absImg(1R,2S)-1,2-Bis[4(S)-benzyloxazolin-2-yl]-3,3-dimethylcyclopropaneC25H28N2O2View the MathML source[α]D20=-56.5 (c 0.78, CHCl3)Source of chirality: (S)-phenylalaninolGraphical absImg(1R,2S)-1,2-Bis[4(R)-phenyloxazolin-2-yl]-3,3-dimethylcyclopropaneC23H24N2O2View the MathML source[α]D25=+160.2 (c 1.5, CHCl3)Source of chirality: (R)-phenylglycinolGraphical absImg(1R,2S)-1,2-Bis[4(S)-phenyloxazolin-2-yl]-3,3-dimethylcyclopropaneC23H24N2O2View the MathML source[α]D20=-152.3 (c 2.0, CHCl3)Source of chirality: (S)-phenylglycinolAbsolute configuration: (1R,2S)Graphical absImg(1R,2S)-1,2-Bis[4(R)-phenyloxazolin-2-yl]-3,3-dimethylcyclopropaneC17H28N2O2View the MathML source[α]D25=+126.5 (c 2.4, CHCl3)Source of chirality: (R)-phenylglycinolAbsolute configuration: (1R,2S)

Jiangchun Zhong

China Agricultural University
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Ming-An Wang

China Agricultural University
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Zheng Xu

Hangzhou Normal University
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Mei Luo

HeFei University of Technology
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