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Ethyl 1,3-dithiane-2-carboxylate, 98+% - CAS 20462-00-4 - Formula C7H12O2S2


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L00663
Ethyl 1,3-dithiane-2-carboxylate, 98+%

CAS: 20462-00-4 MDL: MFCD00006657  EINECS: 243-838-4
UN#:UN1993Hazard Class:3Packing Group:III
Alternate Name: 2-Carboethoxy-1,3-dithiane
1,3-Dithiane-2-carboxylic acid ethyl ester

 

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Chemical Properties

Formula: C7H12O2S2  Flash point: 54°(129°F)
Formula weight: 192.30  Density: 1.220
Melting point: 19-21° Refractive Index: 1.5400
Boiling point: 75-77°/0.2mm 

Literature References

Alkylation of the anion provides a route to ɑ-keto acids (by dethioketalization with NBS), or to substituted acetic acids (by desulfurization): J. Org. Chem., 37, 505 (1972). For phase-transfer alkylation using allylic bromides, see: Liebigs Ann. Chem., 1589 (1982). With crotyl bromide, approx. 95% allylic rearrangement occurs.

The lithiated derivative undergoes 1,4- (Michael) addition to a variety of ɑß-unsaturated compounds. However, the Mg derivative prepared by metallation with an alkylmagnesium halide gives an allylic alcohol by 1,2-addition: Chem. Ber., 114, 2924 (1981).


Other References

Beilstein: 1424352
UN#: UN1993
Harmonized Tariff Code:   2934.99

GHS Hazard and Precautionary Statements

Hazard Statements : H226

Flammable liquid and vapour.

Precautionary Statements : P210-P280-P240-P303+P361+P353-P403+P235-P501A

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves/protective clothing/eye protection/face protection. Ground/bond container and receiving equipment. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. Store in a well-ventilated place. Keep cool. Dispose of contents/container in accordance with local/regional/national/international regulations.

Flammable

Risk & Safety

Risk Phrases: 10
Flammable.
TSCA: No