7318-84-5

Basic information

• Product Name: Oxybis(diethylborane)
• Synonyms: Bis(diethylborinic)anhydride;Oxybis(diethylborane)
• CAS NO: 7318-84-5
• Molecular Formula: C₈H₂₀B₂O
• Molecular Weight: 0
• Mol File: 7318-84-5.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 169°C at 760 mmHg
• Flash Point: 56°C
• Appearance: /
• Density: 0.729g/cm³
• Vapor Pressure: 2.09mmHg at 25°C
• Refractive Index: 1.37
• CAS DataBase Reference: Oxybis(diethylborane)(CAS DataBase Reference)
• NIST Chemistry Reference: Oxybis(diethylborane)(7318-84-5)
• EPA Substance Registry System: Oxybis(diethylborane)(7318-84-5)

Safety Data

• Hazardous Substances Data: 7318-84-5(Hazardous Substances Data)

Usage

InChI:InChI=1/C8H20B2O/c1-5-9(6-2)11-10(7-3)8-4/h5-8H2,1-4H3

Upstream product

• 138517-94-9 potassium 2,2,3,4,5-pentaethyl-2,5-dihydro-1,2,5-oxadiboratolate 
• 593-81-7 trimethylamine hydrochloride 
• 159087-72-6 rac-9-{(dimethylamino)ethylboryloxy}-10-ethyl-10-(1-ethylethenyl)-9-borabicyclo{3.3.2}decane 
• 5518-25-2 Diethylborane 
• 99829-81-9 {(dichloroaluminooxy)diethylborane}2 
• 108342-97-8 (diphenylphosphinooxy)diethylborane 
• 1310-73-2 sodium hydroxide 
• 22100-19-2 (1-pyrrolyl)diethylborane 
• 12081-54-8 tetraethyldiborane⁽⁶⁾ 
• 92784-88-8 {(diphenylphosphinoyloxy)diethylborane}2 
• 791-28-6 Triphenylphosphine oxide 
• 4559-70-0 Diphenylphosphine oxide 
• 97-94-9 triethyl borane 

Downstream Products

• 14695-69-3 4,4,8,8-tetraethylpyrazabole 
• 92810-17-8 (C₆H₁₁)2P(O)OB(C₂H₅)2 
• 120610-80-2 2,2,4,4-tetraethyl-6-methyl-8-phenyl-3-oxonia-1-aza-5-azonia-2,4-diboratabicyclo{3.3.0}octa-5,7-diene 
• 120610-81-3 2,2,4,4-tetraethyl-6,8-diphenyl-3-oxonia-1-aza-5-azonia-2,4-diboratabicyclo{3.3.0}octa-5,7-diene 

Relevant articles and documents

Rearragement and Degradation of Bicyclic Amine-Tetraalkyldiboroxanes

The amine-tetraalkyldiboroxanes 1,4,7,7' = Et; 1b: R1,4,7 = Et, R7' = Ph; 1b': R4,7,7' = Et, R1 = Ph; 1c: R1,7,7' = Et, R4 = Ph> react on heating by EtBO elimination and allylborane rearrangement to yield the allyl-aminoboranes Me2NB(Et)CH2C(R4)=C(R7,7') 4,7,7' = Et, 2b/2b': R4 = Et, R7,7' = Et, Ph; 2c: R4 = Ph, R7,7' = Et>: On heating above 60 deg C the diastereomeric syn/anti-1d/1d' (1d: R1,7 =C8H14, R4,7' = Et; 1d': R1,7' = C8H14, R4,7 = Et) give the unsaturated rac-amino-trialkyldiboroxane (rac-3) (X-ray structure analysis) by intramolecular 1,2-deaminoboration. rac-3 is characterized by reaction with (Et2BH)2 and (Et2BD)2 with formation of the 1,2,6-oxadiborinane 5 by evolution of H2 or HD respectively.The intramolecular CH-borylation of rac-3 is compared with those of the thujopsen hydrocarbons I-III. - Key Words: Amine-Diboroxanes, bicyclic / 1,2-Deaminoboration, intramolecular / Deoxy boration / Allyl-aminoboranes, organosubstituted, rearrangement / C-Borylation

Reactions of Diphenylphosphane Oxide with Organodiboranes(6) - Structure of a Zwitterionic Compound

(C6H5)2POB(C2H5)2 (3'a), prepared from diphenylphosphane oxide (C6H5)2P(O)H (1) and activated triethylborane (2a*), reacts with tetraalkyldiboranes(6) (R2BH)2 to form the BH3-addition compounds (C6H5)2P(BH3)OBR2 , 2BR , and 3B .The reaction of bis(9-borabicyclononane) (4c)2 with 1 leads to (C6H5)2POBC8H14 (3'c) or 3'c-4a and (C6H5)2PH (7) or (C6H5)2PH-HBC8H14 (7-4c).The crystalline zwitterionic (C6H5)2P(H)OB3 (X-ray analysis) is isolated from the reaction of 1 with (4a)2.

Dimeric (Dihalogenoaluminiooxy)diorganoboranes

Tetraorganodiboroxanes R2BOBR2 (1) 2 = 1,5-cyclooctanediyl = C8H14> and aluminium trihalides AlHal3 (2) n: Hal = Cl, (2b)2: Hal = Br> eliminate halogenodiorganoboranes R2BHal (4) in yields >90percent to give crystalline, in solution and in the solid state dimeric (dihalogenoaluminiooxy)diorganoboranes (Hal2AlOBR2)2 (3xy)2 2: R = C2H5, Hal = Cl; (3ba)2: R2 = C8H14, Hal = Cl; (3ab)2: R = C2H5, Hal = Br; (3bb)2: R2 = C8H14, Hal = Br>, having two AlOAl bonds . - The X-ray analyses of (3aa)2 and (3bb)2 confirmed the four-membered AlOAlO ring with the exocyclic O-diorganoboryl groups.