Titanium complexes based on chiral enantiopure dialkanolamines: synthesis, structures and catalytic activity
作者:Kirill V. Zaitsev、Maxim V. Bermeshev、Alexey A. Samsonov、Juri F. Oprunenko、Andrei V. Churakov、Judith A. L. Howard、Sergey S. Karlov、Galina S. Zaitseva
DOI:10.1039/b714739b
日期:——
tridentate ligands (dialkanolamines) RN(CHR3CR1R2OH)(CHR4CR5R6OH) 10–17 were synthesized by the opening of the epoxide ring by the action of the amines or alkanolamines. Titaniumcomplexes, viz. [RN(CHR3CR1R2O)(CHR4CR5R6O)]Ti(O-i-Pr)218–23 and [RN(CHR3CR1R2O)(CHR4CR5R6O)]2Ti 25–31 were synthesized by treatment of Ti(O-i-Pr)4 with one or two equivalents of corresponding dialkanolamines. Complex (R)-PhC
新手性对映纯三齿 配体(二烷醇胺)RN(CHR 3 CR 1 R 2 OH)(CHR 4 CR 5 R 6 OH)10-17是通过在环氧基的作用下环的开环而合成的。胺类或链烷醇胺。钛配合物,即。[RN(CHR 3 CR 1 R 2 O)(CHR 4 CR 5 R 6 O)] Ti(O- i -Pr)2 18–23和[RN(CHR 3 CR 1 R 2 O)(CHR 4 CR 5) R 6 O)] 2 Ti 25-31是通过用一或两当量的相应二烷醇胺处理Ti(O- i- Pr)4合成的。络合物(R)-PhCH(Me)N(CH 2 C(Me)2由一当量的二烷醇胺10与(Me 2 N)2 TiCl 2的反应获得O)2 TiCl 2 * HNMe 2 24。所有新型化合物的组成和结构均在1 H下确定13 C NMR光谱 也 元素分析。讨论了18–31的可能解决方案结构。这单晶X射线衍射的研究23,