6
D.-Q. WEI ET AL.
(R)-methyl 3-hydroxy-3-phenylpropanoate 4a
Colorless oil was obtained in 95% yield. 82% ee was determined by chiral HPLC (chiral-
ꢀ
cel OD-H, n-hexane/i-PrOH =90/10, 0.8 mL/min, 210 nm, 40 C): t (minor) = 11.1 min,
R
2
0
1
tR (major) = 15.2 min. [a]D = þ20.4 (c 1.0, CH Cl ). H NMR (400 MHz, CDCl ) d
2
2
3
7
2
.41–7.25 (m, 5H), 5.13 (dd, J ¼ 8.9, 4.0 Hz, 1H), 3.72 (s, 3H), 3.05 (br), 2.82–2.67 (m,
H). EI-MS (C H O ) m/z (%): 180 (16), 120 (14), 107 (100), 77 (57), 51 (12).
1
0
12 3
Acknowledgements
The authors are grateful for the financial support from the National Natural Science Foundation
of China (Nos. 21403022, 21572226 and 21772196), Program of Star of Dalian Youth Science and
Technology (No 2016RQ062), the Fundamental Research Funds for the Higher Education of
Liaoning Province (2017J027), and Liaoning BaiQianWan Talents Program (201892153).
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