20816-71-1

Basic information

• Product Name: ethane-1,2-diylbis(dichloroborane)
• Synonyms: borane, 1,1'-(1,2-ethanediyl)bis[1,1-dichloro-; Ethane-1,2-diylbis(dichloroborane)
• CAS NO: 20816-71-1
• Molecular Formula: C₂H₄B₂Cl₄
• Molecular Weight: 191.4872
• Mol File: 20816-71-1.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 188.4°C at 760 mmHg
• Flash Point: 67.7°C
• Density: 1.268g/cm³
• Vapor Pressure: 0.829mmHg at 25°C
• Refractive Index: 1.412
• CAS DataBase Reference: ethane-1,2-diylbis(dichloroborane)(CAS DataBase Reference)
• NIST Chemistry Reference: ethane-1,2-diylbis(dichloroborane)(20816-71-1)
• EPA Substance Registry System: ethane-1,2-diylbis(dichloroborane)(20816-71-1)

Safety Data

• Hazardous Substances Data: 20816-71-1(Hazardous Substances Data)

Upstream product

• 59534-55-3 1,2-bis(dichloroaluminio)ethane 
• 10294-34-5 boron trichloride 
• 19287-45-7 diborane 
• 74-86-2 acetylene 
• 74-85-1 ethene 
• 13701-67-2 diboron tetrachloride 

Downstream Products

• 74-84-0 ethane 
• 88870-82-0 bis(dibromoboryl)ethane 
• 10294-34-5 boron trichloride 
• 13709-70-1 BBrCl₂ 
• 13709-71-2 Dibromochloroborane 
• 593-51-1 methylamine hydrochloride 
• 74-85-1 ethene 

Relevant articles and documents

Synthesis of 1,2,3,4,5-Tetramethyl-1,4-diboracyclohexene-2 and Rearrangement to 1,2,3,4,5-Pentamethyl-2,3-dihydro-1,3-diborole

Reaction between Cl2AlCH2CH2AlCl2 and BCl3 leads to Cl2BCH2CH2BCl2, in which halogen exchange is achieved by BI3 to yield I2BCH2CH2BI2 (5).Redox reaction between butyne-2 and 5 results in the formation of 1,4-diiodo-2,3-dimethyl-1,4-diboracyclohexene-2 (1a) and iodine.Methylation of 1a with AlMe3 leads to the title compound 1d, established by 1H, 11B, 13C NMR.Heating of 1d in toluene at 160 deg C in sealed tube results in an intramolecular isomerization to give 1,2,3,4,5-pentamethyl-2,3-dihydro-1,3-diborole (2d) in 90percent yield. - Keywords: 1,2,3,4-Tetramethyl-1,4-diboracyclohexene-2, 1,2,3,4,5-Pentamethyl-2,3-dihydro-1,3-diborole