21170-10-5
21170-10-5 structure
- Name: cis-1,5-dimethylbicyclo[3.3.0]octane-3,7-dione
- Chemical Name: 3a,6a-dimethyl-1,3,4,6-tetrahydropentalene-2,5-dione
- CAS Number: 21170-10-5
- Molecular Formula: C10H14O2
- Molecular Weight: 166.21700
- Create Date: 2018-12-28 12:11:13
- Modify Date: 2024-01-02 22:06:45
-
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.
| Name | 3a,6a-dimethyl-1,3,4,6-tetrahydropentalene-2,5-dione |
|---|---|
| Synonyms |
1,5-dimethyl-bicyclo<3.3.0>octandion
1,5-Dimethylbicyclo<3.3.0>octan-3,7-dione cis-3a,6a-Dimethyltetrahydropentalene-2,5(1H,3H)-dione EINECS 244-255-8 1,5-Dimethylbicyclo<3.3.0>octan-3,7-dion rel-(3aR,6aR)-3a,6a-diMethyl-octahydropentalene-2,5-dione 3A,6A-DIMETHYLPERHYDROPENTALENE-2,5-DIONE 1,5-dimethylbicyclo<3.3.0>octane-3,7-dione cis-tetrahydro-3a,6a-dimethylpentalene-2,5(1H,3H)-dione cis-1,5-dimethylbicyclo<3.3.0>octane-3,7-dione MFCD00003772 |
| Density | 1.142g/cm3 |
|---|---|
| Boiling Point | 257.5ºC at 760 mmHg |
| Melting Point | 228-230ºC(lit.) |
| Molecular Formula | C10H14O2 |
| Molecular Weight | 166.21700 |
| Flash Point | 95ºC |
| Exact Mass | 166.09900 |
| PSA | 34.14000 |
| LogP | 1.72480 |
| Vapour Pressure | 0.0145mmHg at 25°C |
| Index of Refraction | 1.522 |
| Personal Protective Equipment | Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter |
|---|---|
| Hazard Codes | Xi |
| Safety Phrases | 24/25 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | 3 |
|
~83%
21170-10-5 |
| Literature: Coates, Robert M.; Shach, Shrenik K.; Mason, Robert W. Journal of the American Chemical Society, 1982 , vol. 104, # 8 p. 2198 - 2208 |
| Precursor 0 | |
|---|---|
| DownStream 4 | |
