■复习1:手性碳的绝对构型一Rs方法 CHO CHO OH HO CH2OH CH2OH (R)-甘油醛 (S)-甘油醛 CH3 CH 3 CH 3 2 HO. OH H OH 3 OH HO. H oh CH3 CH 3 CH 3 (2R,3R)-2,3-丁二醇(2S,3s)2,3-丁二醇(2s,3R)-2,3丁二醇◼ 复习 1: 手性碳的绝对构型——R/S 方法 CH3 HO H CH3 H OH 2 3 CH3 H OH CH3 HO H 2 3 CH3 H OH CH3 H OH 2 3 H OH CH2OH CHO HO H CH2OH CHO (2R, 3R)-2, 3-丁二醇 (2S, 3S)-2, 3-丁二醇 (2S, 3R)-2, 3-丁二醇 (R)-甘油醛 (S)-甘油醛