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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1680916Generated: October 25, 2026

3-Chloro-2-butanone → 2,3,5,6-Tetramethyl-2,3-dihydro-1,4-dithiine

https://huagongshe.com/reaction/1680916

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-Chloro-2-butanoneHCID 20026—
Reactant2,3-ButanedithiolHCID 548353—
Product2,3,5,6-Tetramethyl-2,3-dihydro-1,4-dithiineHCID 1292005260%

Reaction Steps

The procedure of Example 1(a) is followed using 2,3-butanedithiol and 3-chloro-2-butanone to give 2,3-dihydro-2,3,5,6-tetramethyl-1,4-dithiin, as a colorless liquid, b.p. 58°-60°/0.02 mm, yield 60%. NMR 1.34 (6d), 1.87 (6s), 2.7-3.2 (2m) (CDCl3). IR, 2950, 1600, 1435, 1365, 1150, 1060, 760, 680.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04276422
Source datasetuspto-grants-1981_06
ORD IDord-4524bfc324964614bd4c32d023908987
Source noteuspto-grants-1981_06