Basic information Safety Supplier Related

CIS-1,5-DIMETHYLBICYCLO[3.3.0]OCTANE-3,7-DIONE

Basic information Safety Supplier Related

CIS-1,5-DIMETHYLBICYCLO[3.3.0]OCTANE-3,7-DIONE Basic information

Product Name:
CIS-1,5-DIMETHYLBICYCLO[3.3.0]OCTANE-3,7-DIONE
Synonyms:
  • rel-(3aR,6aR)-3a,6a-diMethyl-octahydropentalene-2,5-dione
  • (3aβ,6aβ)-3a,6a-Dimethyloctahydropentalene-2,5-dione
  • 1β,5β-Dimethylbicyclo[3.3.0]octane-3,7-dione
  • 3a,4,6,6a-Tetrahydro-3aα,6aα-dimethyl-2,5(1H,3H)-pentalenedione
  • 3aβ,6aβ-Dimethyltetrahydropentalene-2,5(1H,4H)-dione
  • CIS-1,5-DIMETHYLBICYCLO[3.3.0]OCTANE-3,7-DIONE
  • 3A,6A-DIMETHYLPERHYDROPENTALENE-2,5-DIONE
  • cis-tetrahydro-3a,6a-dimethylpentalene-2,5(1H,3H)-dione
CAS:
21170-10-5
MF:
C10H14O2
MW:
166.22
EINECS:
244-255-8
Product Categories:
  • chiral
  • C10
  • Carbonyl Compounds
  • Ketones
Mol File:
21170-10-5.mol
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CIS-1,5-DIMETHYLBICYCLO[3.3.0]OCTANE-3,7-DIONE Chemical Properties

Melting point:
228-230 °C(lit.)
Boiling point:
254.44°C (rough estimate)
Density 
1.0060 (rough estimate)
refractive index 
1.4930 (estimate)
form 
solid
color 
Faint yellow/faint beige
CAS DataBase Reference
21170-10-5(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xi
Safety Statements 
24/25
WGK Germany 
3
Hazard Note 
Irritant
HS Code 
2914290090

MSDS

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CIS-1,5-DIMETHYLBICYCLO[3.3.0]OCTANE-3,7-DIONE Usage And Synthesis

Chemical Properties

white to light yellow crystal powde

Synthesis Reference(s)

Tetrahedron Letters, 9, p. 4885, 1968 DOI: 10.1016/S0040-4039(00)72784-5

General Description

Olefination of cis-1,5-dimethylbicyclo[3.3.0]octane-3,7-dione with (carbethoxyethylidene)triphenylphospharane under controlled microwave heating has been investigated. It reacts with carbon disulfide, strong base and an alkylating agent in dipolar aprotic solvents to yield racemic mixtures of 2-dialkylthio-methylene compounds.

CIS-1,5-DIMETHYLBICYCLO[3.3.0]OCTANE-3,7-DIONESupplier

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