742937
1,4-Diazabicyclo[2.2.2]octane bis(sulfur dioxide) adduct
≥95% (sulfur, elemental analysis)
Synonym(s):
DABCO•(SO2)2, DABSO
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About This Item
Empirical Formula (Hill Notation):
C6H12N2O4S2
CAS Number:
Molecular Weight:
240.30
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352005
MDL number:
Assay:
≥95% (sulfur, elemental analysis)
Form:
powder
Quality Level
assay
≥95% (sulfur, elemental analysis)
form
powder
composition
active SO2, ~50% , carbon, 28.3-31.6%
storage temp.
2-8°C
SMILES string
[O-]S(=O)[N+]12CC[N+](CC1)(CC2)S([O-])=O
InChI
1S/C6H12N2O4S2/c9-13(10)7-1-2-8(5-3-7,6-4-7)14(11)12/h1-6H2
InChI key
RWISEVUOFYXWFO-UHFFFAOYSA-N
Application
1,4-Diazabicyclo[2.2.2]octane bis(sulfur dioxide) (DABSO) is a charge transfer complex that can be used as a sulfur dioxide surrogate:
It can also be used to activate DMSO and o-vinylanilines for the synthesis of N-aryl-1H-benzo[d]imidazol-1-amine and 4-aryl quinolines, respectively.
- In palladium-catalyzed aminosulfonylation process.
- In reaction with aryl bromides to synthesize sodium aryl sulfinates.
It can also be used to activate DMSO and o-vinylanilines for the synthesis of N-aryl-1H-benzo[d]imidazol-1-amine and 4-aryl quinolines, respectively.
signalword
Danger
Hazard Classifications
Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Irrit. 2 - Flam. Sol. 1 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
4.1B - Flammable solid hazardous materials
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Carbon annulation of ortho-vinylanilines with dimethyl sulfoxide to access 4-aryl quinolines.
Yuan J, et al.
Organic & Biomolecular Chemistry, 15(6), 1334-1337 (2017)
Palladium-catalyzed aminosulfonylation of aryl halides.
Nguyen B, et al.
Journal of the American Chemical Society, 132(46), 16372-16373 (2010)
Synthesis of sodium aryl sulfinates from aryl bromides employing 1, 4-diazabicyclo [2.2. 2] octane bis (sulfur dioxide) adduct (DABSO) as a bench-stable, gas-free alternative to SO2.
Skillinghaug B, et al.
Tetrahedron Letters, 57(5), 533-536 (2016)