143-66-8 Usage
Chemical Properties
white powder
Uses
Different sources of media describe the Uses of 143-66-8 differently. You can refer to the following data:
1. Sodium Tetraphenylboroate is a salt that is commonly used in inorganic and organometallic chemistry as a precipitating agent. Sodium Tetraphenylboroate is also utilized for the preparation of N-acylam
monium salts and in coordination chemistry due to their favourable solubility in nonpolar sovlents and their crystallinity.
2. Determination of potassium, ammonium, rubidium, and cesium.
3. As reagent for determination of potassium, ammonium, rubidium and cesium ions: Barnard, Buechl, Chemist-Analyst 48, 44, 49 (1959); Montequi, Serrano, An. R. Acad. Farm. 26, 107 (1960).
General Description
Sodium tetraphenylborate (Ph4BNa) undergoes rhodium-catalyzed addition reactions with N-phenylsulfonyl aldimines to afford R(Ph)CHNHSO2Ph.
Purification Methods
Dissolve the borate in dry MeOH and add dry Et2O. Collect the solid and dry it in a vacuum at 80o/2mm for 4hours. It can also be extracted (Soxhlet) using CHCl3, and it crystallises from CHCl3 as snow-white needles. It is freely soluble in H2O, Me2CO but insoluble in pet ether and Et2O. An aqueous solution has pH 5 and can be stored for days at 25 or lower, and for 5 days at 45o without deterioration. Its solubility in polar solvents increases with decrease in temperature [Wittig & Raff Justus Liebigs Ann Chem 573 204 1950]. The salt can also be recrystallised from acetone/hexane or CHCl3, or from Et2O/cyclohexane (3:2) by warming the solution to precipitate the compound. Dry it in a vacuum at 80o. It dissolves in Me2CO at 50-60o to give a clear solution. After standing at this temperature for 10minutes the mixture is filtered rapidly through a pre-heated Büchner funnel, cooled and the crystals are collected and dried in a vacuum desiccator at room temperature for 3days [Abraham et al. J Chem Soc, Faraday Trans 1 80 489 1984]. If the product gives a turbid aqueous solution, the turbidity can be removed by treating with freshly prepared alumina gel and filtering. [Beilstein 16 IV 1624.]
Check Digit Verification of cas no
The CAS Registry Mumber 143-66-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,4 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 143-66:
(5*1)+(4*4)+(3*3)+(2*6)+(1*6)=48
48 % 10 = 8
So 143-66-8 is a valid CAS Registry Number.
InChI:InChI:1S/C24H20B.Na/c1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24;/h1-20H;/q-1;+1
143-66-8Relevant articles and documents
Mevel, N.,Lacruche, B.
, (1958)
Base-free palladium-catalyzed cross-coupling of arylsulfonium salts with sodium tetraarylborates
Osuka, Atsuhiro,Vasu, Dhananjayan,Yorimitsu, Hideki
, p. 3286 - 3291 (2020/10/20)
Palladium-catalyzed cross-coupling reactions of arylsulfonium salts with sodium tetraarylborates were found to proceed smoothly without recourse to an additional base, providing a new, reliable route to biaryls from organosulfur compounds.