223593-76-8

Upstream product

• 108-67-8 1,3,5-trimethyl-benzene 
• 41009-91-0 1,3,5-tris(3-hydroxypropyl)benzene 
• 1733-57-9 ethydiphenylphosphine oxide 
• 41009-92-1 1,3,5-tris(3'-bromopropyl)benzene 
• 374606-98-1 1,3,5-tris[3'-(diphenylphosphoryl)propyl]benzene 
• 829-85-6 diphenylphosphane 
• 223593-66-6 1,3,5-tris<3-(trifluoromethylsulfonyloxy)propyl>benzene 

Relevant academic research and scientific papers

Trifunctional phosphane ligands and their application in the synthesis of novel cage-structured platinacyclophanes and trinuclear chain-like platinacycles by self-assembly

The synthesis of the 1,3,5-tris[(diphenylphosphoryl)alkyl]-benzenes 7-10 succeeds by reaction of the corresponding 1,3,5-tris(bromoalkyl)benzenes 3-6 with ethyl diphenylphosphinite in an Arbusov-type reaction. Reduction of these phosphane oxides leads to the trifunctional phosphane ligands 11-14. Their potency of self-assembly was examined by the employment of platinum(II) complex fragments. A five-component self-assembly consisting of 3 equiv, of the platinum complex Cl2Pt(NCPh)2 and 2 equiv, of the ligands 11-14 under high-dilution conditions led to the formation of the nanoscaled triplatinacyclophanes 1 and 15-17. Polymers were formed as by-products from the reactions between 11-13 and Cl2Pt(NCPh)2, whereas in the case of 14 three other platinacyles 18-20 with a chain-like structure were formed. The structures of the metallacycles 1 and 15-17 as well as 18-20 were elucidated by 31p{1H}, 13C{1H}, and 195Pt{1H} NMR spectroscopic investigations.

Preparation, properties, and reactions of metal-containing heterocycles, 99. - Cage-structured triplatinacyclophanes

The synthesis of the tris(triflate) 4 (Scheme 1) has been achieved by means of a straightforward three-step reaction sequence. After initial lithiation of mesitylene, treatment of the obtained trilithium compound C6H3(CH2Li)3 (2) with oxirane results in the formation of 1,3,5-tris(3- hydroxypropyl)benzene (3), which is then transformed to 4 by reaction with (CF3SO2)2O in the presence of pyridine. Whereas 4 reacts with Na2[Os(CO)4] in a somewhat complicated manner, similar reactions with Na[Re(CO)5] and LiPPh2 give the hydrocarbon-bridged tris(rhenium) complex C6H3[(CH2)3Re(CO)5]3 (5) and the tris(phosphane) C6H3[(CH2)3PPh2]3 (6), respectively. Employing the high-dilution method, from 6 and Cl2Pt(NCPh)2 the nanoscaled tri- and hexaplatinacyclophanes 7 and 9 are available. Owing to the optimal geometry and flexibility of the cage in 7, 1,2-dichloroethane can be reversibly encapsulated. The molecular structure of 7 · 7 1,2-Cl2C2H4 was determined by an X-ray structure analysis. The utility of the reactive metal centers in 7 has been demonstrated by replacing the chloro ligands by acetonitrile to give the cationic platinacyclophane 8, in which, according to NMR studies, the cage-like structure is preserved.