中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(S)-3-甲基戊酸 | (3S)-methylvaleric acid | 1730-92-3 | C6H12O2 | 116.16 |
A new process for synthesis of ( 2S,3S)-2-ethyl-3-methylvaleramide has been developed via the key step of a diastereoselective alkylation reaction using non-cross-linked polystyrene (NCPS) supported ( 4S)-2-phenylimino-2-oxazolidine as a chiral auxiliary. This method is efficient with the target product obtained in 99.24% ee and 38.4% overall yield and the chiral auxiliaries can be recovered quantitatively by simple filtration.