Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2083767Generated: October 31, 2026

Propionic Acid → HCID 20357522, compound

https://huagongshe.com/reaction/2083767

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPropionic AcidHCID 1032—
ReactantSulphobenzoic anhydrideHCID 13795534—
Reactant6-Chloro-2-fluoro-9-(1-methylpiperidin-4-yl)-9H-thioxanthen-9-olHCID 20357482—
ProductHCID 20357522HCID 20357522—

Reaction Steps

Dehydration is accomplished by heating 6.4 g. (0.018 mol) of the above thioxanthene-9-ol for one hour with 6.5 g. (0.035 mol) of o-sulfobenzoic anhydride in 100 ml. of propionic acid. Workup the reaction mixture affords 4-(6-chloro-2-fluoro-9-thioxanthenylidene) 1-methylpiperidine, isolated as the hydrochloride salt, m.p. 264°-265° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04086350
Source datasetuspto-grants-1978_04
ORD IDord-bc2a7b0e4c5a42bb903593d02bc63262
Source noteuspto-grants-1978_04