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1-(Trimethylsiloxy)cyclopentene

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1-(Trimethylsiloxy)cyclopentene Basic information

Product Name:
1-(Trimethylsiloxy)cyclopentene
Synonyms:
  • CYCLOPENTANONE ENOL TRIMETHYL SILYL ETHER
  • (CYCLOPENTENYLOXY)TRIMETHYLSILANE
  • 1-(TRIMETHYLSILOXY)CYCLOPENTENE
  • 1-(TRIMETHYLSILYLOXY)CYCLOPENTENE
  • (1-CYCLOPENTENYLOXY)TRIMETHYLSILANE
  • (1-cyclopenten-1-yloxy)trimethylsilane
  • (Cyclopentenyloxy)trimethylsylane
  • 1-(TRIMETHYLSILYLOXY)CYCLOPENTENE 97+%
CAS:
19980-43-9
MF:
C8H16OSi
MW:
156.3
EINECS:
243-448-4
Product Categories:
  • Monoalkoxysilanes
  • Si (Classes of Silicon Compounds)
  • Silicon Compounds (for Synthesis)
  • Si-O Compounds
  • Synthetic Organic Chemistry
Mol File:
19980-43-9.mol
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1-(Trimethylsiloxy)cyclopentene Chemical Properties

Boiling point:
45 °C/11 mmHg (lit.)
Density 
0.878 g/mL at 25 °C (lit.)
refractive index 
n20/D 1.440(lit.)
Flash point:
101 °F
storage temp. 
−20°C
form 
clear liquid
color 
Colorless to Light yellow to Light orange
Specific Gravity
0.878
Hydrolytic Sensitivity
7: reacts slowly with moisture/water
BRN 
385956
CAS DataBase Reference
19980-43-9(CAS DataBase Reference)
EPA Substance Registry System
Silane, (1-cyclopenten-1-yloxy)trimethyl- (19980-43-9)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
10-36/37/38
Safety Statements 
26-36
RIDADR 
UN 1993 3/PG 3
WGK Germany 
3
10-21
TSCA 
Yes
HazardClass 
3.2
PackingGroup 
III
HS Code 
29319090

MSDS

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1-(Trimethylsiloxy)cyclopentene Usage And Synthesis

Chemical Properties

Clear light yellow liquid

Uses

1-(Trimethylsiloxy)cyclopentene may be used in chemical synthesis studies.

Purification Methods

If too impure as seen by the NMR spectrum, then dissolve it in 10 volumes of pentane, shake with cold NaHCO3 (3 x 500mL), then 1.5M HCl (200mL) and aqueous NaHCO3 (200mL) again, dry (Na2SO4), filter, evaporate and distil it through a short Vigreux column (p 11). 1H NMR: (CDCl3) : 0.21 (s, 9H), 1.55 (m, 2H), 1.69 (m, 2H), 2.05 (br d, 4H) and 4.88 (br s, 1H). GLPC in a 6ft x 1/8inch with 3% SP2100 on 100-120 mesh Supelcoport column should give one peak. Store dry. [For the cyclohexene analogue see Varghese et al. Org Synth Coll Vol VIII 460 1993.]

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