meso-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium

Base Information

• Chemical Name: meso-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium
• CAS No.: 1038922-43-8
• Molecular Formula: C₂₈H₄₁B₂N₂OSiY
• Molecular Weight: 560.26
• Mol file: 1038922-43-8.mol

Synonyms:

Chemical Property of meso-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of meso-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium

There total 3 articles about meso-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 27.0%

bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)yttrium chloride (1038922-44-9,1038400-10-0) + trimethylsilylmethyllithium (1822-00-0) → meso-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium (1038922-43-8,1038400-11-1) + racemic-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium

Guidance literature:

In tetrahydrofuran; soln. of LiCH2SiMe3 in THF added dropwise to soln. of Y complex in THF at -78°C; stirred (-78°C, 2 h and 25°C, 20 min); solvent removed; extd. (toluene); filtered; filtrate concd.; layered with hexane; crystd. (-30°C, 2 d); recrystd. by slow diffusion of hexane into toluene soln. (meso and rac isomers 1:3); recrystd. from hexane-toluene (rac isomer); elem. anal.;

DOI:10.1021/om800073s

Reference yield:

racemic-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium → meso-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium (1038922-43-8,1038400-11-1)

Guidance literature:

In benzene-d6; soln. of racemic Y complex stored at 25°C for 24 h; monitored by (1)H NMR spectra;

DOI:10.1021/om800073s

Reference yield:

2,3-dihydro-1-methyl-2-phenyl-1H-1,2-azaborol-3-yllithium + [Y(trimethylsilylmethyl)2(THF)4][BPh4] (827342-19-8,643069-31-2) → meso-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium (1038922-43-8,1038400-11-1) + racemic-bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)(trimethylsilylmethyl)yttrium

Guidance literature:

In tetrahydrofuran; soln. of Li salt of ligand in THF added dropwise to soln. of Y complex in THF at -78°C; warmed to 25°C; stirred for 15 min; solvent removed; extd. (pentane); filtered; filtrate concd.; crystd. at -35°C; recrystd. (mixt. of meso and rac isomers 1:4, 50% total yield); rac isomer sepd. by repetitive recrystn.;

DOI:10.1021/om800073s

upstream raw materials:

[Y(trimethylsilylmethyl)2(THF)4][BPh₄]

bis(1-methyl-2-phenyl-1,2-azaborolyl)(tetrahydrofuran)yttrium chloride

trimethylsilylmethyllithium