lithium tetramethylborate(1-)

Base Information

• Chemical Name: lithium tetramethylborate(1-)
• CAS No.: 2169-38-2
• Molecular Formula: C4H12 B . Li
• Molecular Weight: 77.8913
• Hs Code.: 2931900090
• Mol file: 2169-38-2.mol

Synonyms:Borate(1-),tetramethyl-, lithium (8CI,9CI); Lithium tetramethylborate (7CI); Lithiumtetramethylborate(1-)

Chemical Property of lithium tetramethylborate(1-)

Chemical Property:

• Vapor Pressure: 205000mmHg at 25°C
• Melting Point: 189°C
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• PSA: 51.75000
• Density: g/cm³
• LogP: 3.05880

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of lithium tetramethylborate(1-)

There total 8 articles about lithium tetramethylborate(1-) 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: 22.0%

methyllithium (917-54-4) + borane tetrahydrofuran → lithium borohydride + lithium trimethylhydroborate (63526-12-5) + lithium tetramethylborate(1-) (2169-38-2) + lithium dihydrido dimethyl borate (84280-31-9)

Guidance literature:

In tetrahydrofuran; diethyl ether; under dry N2, soln. of BH3 in THF cooled to -70°C, ethereal soln. of MeLi added within 20 min with vigorously stirring, warmed to -20°C; not isolated, detected by NMR;

Reference yield:

lithium trimethylplumbyltrihydridoborate (126351-00-6) → lead (7439-92-1) + lithium borohydride + Tetramethylblei-(IV) (75-74-1) + lithium tetramethylborate(1-) (2169-38-2)

Guidance literature:

In tetrahydrofuran; removing of solvent;

Reference yield:

trimethylborane (593-90-8) + methyllithium (917-54-4) → lithium tetramethylborate(1-) (2169-38-2)

Guidance literature:

In diethyl ether; addition of a soln. of B(CH3)3 in ether to a ether soln. of LiCH3;; removal of the ether and excess of B(CH3)3 in vac., heating the solid residue in vac. to 60°C;;

DOI:10.1021/jo01163a015

upstream raw materials:

trimethylborane

methylaminodimethylborane

(2,2-Dimethyl-hydrazino)-dimethyl-boran

methyllithium

Downstream raw materials:

boron trifluoride

methane

ethane

cyclopropane

Refernces

• 1、 Wrackmeyer, Bernd,Horchler, Klaus. "Trimethyllead-Lithium in Tetrahydrofuran: Synthesis of Trimethyl(trimethylplumbyl)silane and of the Trimethylplumbyltrihydridoborate Anion". . p. 1195 - 1198. Retrieved 2007/10/02.
• 2、 Biffar, Werner,Noeth, Heinrich. "Contributions to the Chemistry of Boron, 124. Tris(trimethylsilyl)silyl Boranes and Tris(trimethylsilyl)silyl Borates". . p. 1509 - 1515. Retrieved 2007/10/02.