2007
DOI: 10.1007/s10562-007-9145-2
|View full text |Cite
|
Sign up to set email alerts
|

A novel type of chiral titanium phosphonates and hybrid titanium phosphonates for heterogeneous asymmetric catalysis

Abstract: 1R, 2S)-())-2-amino-1, 2-diphenylethanol and (1S, 2R)-(+)-2-amino-1, 2-diphenylethanol had been immobilized on the layered titanium phosphonates 4a-d and hybrid titanium phosphonates 5a-c in spheroid form with interlayer space 20.845-19.407 Å which can be used as heterogeneous catalysts in the enantioseletive addition of diethylzinc to benzaldehyde to obtain optically active (R)-or (S)-1-phenylpropan-1-ol for the first time. It was shown that the titanium phosphonate 4a led to active heterogeneous catalysis fo… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1

Citation Types

0
2
0
1

Year Published

2008
2008
2020
2020

Publication Types

Select...
8

Relationship

0
8

Authors

Journals

citations
Cited by 11 publications
(3 citation statements)
references
References 23 publications
0
2
0
1
Order By: Relevance
“…Metal phosphonates are in the focus of recent research activities due to their interesting properties such as magnetism, porosity, 1, 2 luminescence 3 or catalysis. 4 Metal phosphonates show a large structural variety depending on the linker molecule or the incorporated metal ion. The properties may change drastically upon variation of the constituents.…”
Section: Introductionmentioning
confidence: 99%
“…Metal phosphonates are in the focus of recent research activities due to their interesting properties such as magnetism, porosity, 1, 2 luminescence 3 or catalysis. 4 Metal phosphonates show a large structural variety depending on the linker molecule or the incorporated metal ion. The properties may change drastically upon variation of the constituents.…”
Section: Introductionmentioning
confidence: 99%
“…The authors postulated that the epoxide was activated by moieties having a partial positive charge in the titanium phosphonate framework such as the phosphonate, or Ti(IV) centers, followed by the attack of water directed by the homochiral leucine peptide to yield S-styrene glycol [110]. Similarly, the enantioselective addition reaction to obtain optically active phenylpropanol has also been catalyzed by hybrid titanium phosphonates [111].…”
Section: Catalysismentioning
confidence: 99%
“…通过表面修饰来制备手性催化剂是一 种简便的方法 [113] . 将手性氨基醇固载到膦酸钛骨架上 可制备出手性有机膦酸钛材料, 用于二乙基锌对苯甲醛 的不对称加成反应, 1-苯基-1-丙醇的产率达到 88.5%, 对映体过量值(ee 值)可达到 40.8% [114] . 在催化剂循环使 用 7 次后, ee 值无明显变化, 但是继续重复使用时, 催化 剂的 ee 值开始明显降低, 这可能是由于催化剂的损失 和膦酸钛骨架结构的分解.…”
Section: 催化氧化unclassified