9-CHLORO-9-PHENYLXANTHENE
Synonym(s):Pixyl chloride
- CAS NO.:42506-03-6
- Empirical Formula: C19H13ClO
- Molecular Weight: 292.76
- MDL number: MFCD00010195
- EINECS: 255-857-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-23 13:52:06
What is 9-CHLORO-9-PHENYLXANTHENE?
The Uses of 9-CHLORO-9-PHENYLXANTHENE
9-Chloro-9-phenylxanthene was used in the preparation of (1S,5S,6R,8S)-6-[(allyloxycarbonyl)oxy]-5-(trifluoroacetamido)-8-[9′-(9′-phenylxanthenyl)oxy]-2-oxabicyclo(3.2.1)octane.
Purification Methods
A possible impurity is 9-hydroxy-9-phenylxanthene. If the material contains a lot of the hydroxy product, then boil 10g of it in CHCl3 (50mL) with redistilled acetyl chloride (1mL) until liberation of HCl is complete. Evaporation leaves the chlorophenylxanthene as the hydrochloride which on heating with *benzene loses HCl; and on adding pet ether prisms of chlorophenylxanthene separate and contain 0.5mol of *benzene. The *benzene-free compound is obtained on drying, and it melts to a colourless liquid. [Gomberg & Cone Justus Liebigs Ann Chem 370 142 1909.] The 9-phenylxanthyl group is called “pixyl” and is a good protecting group [Chattopadhyaya & Reese J Chem Soc, Chem Commun 639 1978, Beilstein 17 III/IV 1704.]
Properties of 9-CHLORO-9-PHENYLXANTHENE
Melting point: | 102-106 °C (lit.) |
Boiling point: | 387.1±42.0 °C(Predicted) |
Density | 1.30±0.1 g/cm3(Predicted) |
solubility | chloroform: soluble25mg/mL, clear, yellow to orange |
BRN | 237712 |
Safety information for 9-CHLORO-9-PHENYLXANTHENE
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 9-CHLORO-9-PHENYLXANTHENE
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