比较了多种端基结构不同的含磷酰基酸性荚果在提取铀(vi)、钍(iv)、镧(iii)、钕(III)、钬(III)和镱( III) 从硝酸溶液到 1,2-二氯乙烷:2-[(H2O)(RO)(O)P]-4-R´-C6H4–(OCH2CH2)2–OC6H4–4-R´-2-[ P(O)(RO)(OH)] (1–6),其中 R = Et,R´ = H (1),R = Bu,R´ = H (2),R = R´ = Et (3 ), R = Bu, R´ = Et (4), R = Et, R´ = But (5), and R = Bu, R´ = But (6)。描述了首次获得的podands 2、4和6的合成。在镧系元素存在的情况下,选择性回收 ThIV 和 UVI 的最有效提取剂是 podands 4-6,它在低浓度硝酸下定量提取锕系元素。胶束聚集体 6–90, 7–70,
Stereoselective Synthesis of Phosphoryl-Substituted Phenols
作者:Biquan Xiong、Mei Li、Yanxi Liu、Yongbo Zhou、Changqiu Zhao、Midori Goto、Shuang-Feng Yin、Li-Biao Han
DOI:10.1002/adsc.201300913
日期:2014.3.10
been achieved using P(O)H compounds as efficient phosphorylation reagents without the assistance of any ligand. Optically active H‐phosphinates can also act as good substrates in the reaction, giving the (Sp)‐phosphoryl substituted phenolic compounds stereospecifically with retention of configuration at the phosphorus center. Furthermore, it is shown that the migration of phosphorus on O‐aryl phosphonates