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L00838 Phenyl chlorothionoformate, 98+%

CAS Number
Phenyl chlorothionocarbonate
Phenyl thionochloroformate

Stock No. Size Price ($) Quantity Availability
L00838-03 1g 27.20
L00838-06 5g 72.50
L00838-14 25g 294.00
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Phenyl chlorothionoformate, 98+%


Chemical Properties

Formula Weight
Boiling Point
Flash Point
Refractive Index
Storage & Sensitivity
Keep Cold. Moisture Sensitive. Store under Nitrogen.
Soluble in water.


Phenyl chlorothionoformate has been used in stereo directed synthesis of optically active, (-)-mintlactone, synthesis of peptide α-thioesters having a variety of C-terminal amino acids, synthesis of scyllo-inositol derivatives, thionocarbonylation of unprotected thymine nucleosides, preparation of phenoxythiocarbonyl esters of protected ribonucleosides. It is also used as a reagent in the thionocarbonylation of unprotected thymine nucleosides. It forms phenoxythiocarbonyl esters of protected ribonucleosides which can be reduced by tributyltin hydride to deoxyribonucleosides.


Moisture, Heat Sensitive. Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Keep away from oxidizing agents. Stable under recommended storage conditions.

Literature References

DN Kevill.; MJ D'Souza. Correlation of the rates of solvolysis of phenyl chlorothionoformate and phenylchlorodithioformate. Canadian journal of chemistry. 199977(5-6) , 1118-1122.

DS Millan.; RH Prager. The dealkylation of tertiary aliphatic amines with phenyl chlorothionoformate. Tetrahedron letters. 199839(24) , 4387-4390.

Aryl chlorothionoformates react with OH groups to give thiocarbonate esters. These have a much greater tendency to undergo cyclic elimination than their oxygen counterparts, with dehydration as the net result. Thus, e.g. oximes are dehydrated to nitriles under mild conditions: Chem. Commun., 1014 (1970):

Similarly, amides are dehydrated to nitriles, and formamides to isonitriles under mild conditions: Tetrahedron Lett., 40, 747 (1999).

Alcohols are converted to alkenes in better yields than in the Chugaev (xanthate pyrolysis) method, succeeding with hindered alcohols which do not readily form xanthates: J. Chem. Soc., Chem. Commun., 1215 (1972); Helv. Chim. Acta, 55, 2277 (1972). Secondary alcohols give thiocarbonate esters which can be reduced to alkanes by tributyltin hydride, in a useful deoxygenation sequence. For use in an enantiospecific synthesis of the antiviral agent ganciclovir phosphonate, see: J. Med. Chem., 37, 1371 (1994).

Reagent for conversion of imidazoles to imidazole-2-thiones: Synlett, 239 (1995).

Reagent, alternative to chloroformates, for dealkylation of tertiary amines: Austral. J. Chem., 52, 841 (1999).

GHS Hazard and Precautionary Statements

Hazard Statements: H227-H314

Combustible liquid. Causes severe skin burns and eye damage.

Precautionary Statements: P210-P260-P264b-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P363-P370+P378q-P501c

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Wash contaminated clothing before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


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