4 4 8 8-TETRAETHYLPYRAZABOLE 98

Base Information

• Chemical Name: 4 4 8 8-TETRAETHYLPYRAZABOLE 98
• CAS No.: 14695-69-3
• Molecular Formula: C₁₄H₂₆B₂N₄
• Molecular Weight: 272.009
• Mol file: 14695-69-3.mol

Synonyms:4H,4H,8H,8H-7a,8a-Diaza-3a,4a-diazonia-4,8-diborata-s-indacene,4,4,8,8-tetraethyl- (8CI); Boron, tetraethylbis[m-(1H-pyrazolato-N1:N2)]di-; 1H-Pyrazole, boroncomplex; Boron, tetraethylbis(m-pyrazolato)di- (8CI)

Chemical Property of 4 4 8 8-TETRAETHYLPYRAZABOLE 98

Chemical Property:

• Melting Point: 110-111 °C(lit.)
• PSA: 26.64000
• LogP: 3.52500

Purity/Quality:

99%min ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 4 4 8 8-TETRAETHYLPYRAZABOLE 98

There total 13 articles about 4 4 8 8-TETRAETHYLPYRAZABOLE 98 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: 98.0%

NH-pyrazole (288-13-1) + Tetraethyldiboroxan (7318-84-5) → 4,4,8,8-tetraethylpyrazabole (14695-69-3)

Guidance literature:

In neat (no solvent); heating to 120-130°C for 6 h; cooling to room temp.; crushing; washing (H2O); drying; recryst. (ethanol);

Reference yield: 94.0%

triethyl borane (97-94-9) + trimethylamine-borane (75-22-9) → 4,4,8,8-tetraethylpyrazabole (14695-69-3)

Guidance literature:

DOI:10.1021/ja00989a016

Reference yield: 92.0%

2,2,4,4-tetraethyl-3-oxonia-1-azonia-5-aza-2,4-diboratabicyclo{3.3.0}octa-6,8-diene (116928-37-1) → diethylboric acid (4426-31-7) + 4,4,8,8-tetraethylpyrazabole (14695-69-3)

Guidance literature:

vac. distn. of 2,2,4,4-tetraethyl-3-oxonia-1-azonia-5-aza-2,4-diboratabicyclo(3.3.0)octa-6,8-diene at 80°C/E-2 Torr; recrystn. from EtOH, detn. by IR;

upstream raw materials:

NH-pyrazole

Tetraethyldiboroxan

B(N(CH₃)CH₂CH₂N(CH₃))(N₂C₃H₃)

(dimethylamino)diethylborane

Refernces

• 1、 Komorowski,Maringgele,Meller,Niedenzu,Serwatowski. "Pyrazole complexes of three-coordinated boranes". . p. 3845 - 3849. Retrieved 2008/10/08.
• 2、 Hsu,Mariategui,Niedenzu,Shore. "Chemical behavior and structure of triply bridged pyrazaboles of the type RB(μ-pz)2(μ-OBRO)BR". . p. 143 - 147. Retrieved 2008/10/08.