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4.2.27. Methyl 3-methyl-3-(2-oxazolidinyl)propionate
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4.2.28. Methyl 3-benzylsulfanyl-propionate (Scheme 3).
See Ref. 13a.
4.2.29. Methyl 3-dimethoxyphosphorylpropionate
(Scheme 3). See Ref. 13b.
Acknowledgements
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This work was supported by the Korea Research Foundation
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