1) asymmetric hydroxyl
不对称羟基
1.
Selective protection of the asymmetric hydroxyl of 5-bromo-2-hydroxyphenylmethanol was investigated by method of fractional steps.
采用分步法对5-溴-2-羟基苯甲醇中的不对称羟基进行了选择性保护。
2) Asymmetric dihydroxylation
不对称二羟基化
1.
METHODS The asymmetric dihydroxylations of trans stilbene, naphthyl allyl ether and styrene were catalyzed by DHQD PHAL OPEG OMe/OsO 4 with tBuOH H 2O (1∶1) as the solvent and K 3Fe(CN) 6 as the cooxidant.
方法 以 t Bu OH/H2 O(1∶1)为溶剂 ,以 K3Fe(CN ) 6 为共氧化剂 ,用 DHQD- PHAL -OPEG- OMe/Os O4 分别催化反式二苯乙烯、萘基烯丙基醚和苯乙烯的不对称二羟基化反应 。
2.
The asymmetric dihydroxylation of ortho-substituted 1,2-diphenylethenes affords the corresponding diols in good yields (77～89%) and high enantiomeric excesses (73～98%) in the presence of catalytic amount OsO4 and four different chiral ligands respectively.
邻位取代１，２－二苯乙烯催化不对称二羟基化反应张生勇，孙晓莉（第四军医大学化学教研室西安７１００３２）关键词 不对称二羟基化，手性二醇近年催化的反式稀烃的不对称二羟基化反应取得明显进展［１］，但催化的邻位取代的１，２－二苯乙烯类化合物。
4) asymmetric amino-hydroxylation
不对称氨羟基化
1.
The osmium-catalyzed asymmetric dihydroxylation (AD) and asymmetric amino-hydroxylation (AA) of olefins provide the most effective methods for the preparation of chiral vicinal diols and B-amino diols respectively.
锇催化的烯烃不对称二羟基化(AD)和不对称氨羟基化(AA)反应是制备手性邻二醇和β-氨基醇的有效方法，在有机合成及药物合成中有着重要作用。
5) asymmetric hydroxylation
不对称羟基化
6) asymmetric dihydroxylation
不对称双羟基化反应
1.
N,N'-Diferrocenylmethyl-(1S,2S)-1,2-diphenylethanediamine was synthesized by two steps from (1S,2S)-1,2-diphenylethanediamine and ferrocenealdehyde, and has been used as chiral ligand to asymmetric dihydroxylation of olefins.
(1S,2S)-1,2-二苯基乙二胺和甲酰基二茂铁经缩合和还原两步反应,以90%的产率合成了N,N'-二茂铁甲基-(1S,2S)-1,2-二苯基乙二胺,并以其为配体催化烯烃的不对称双羟基化反应,获得了较高的对映选择性(71%～86%ee)。
补充资料：不对称羟基化
分子式：
CAS号：
性质：应用羟基化反应进行不对称合成。
CAS号：
性质：应用羟基化反应进行不对称合成。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条