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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1680912Generated: October 30, 2026

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

https://huagongshe.com/reaction/1680912

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-Chloro-2-butanoneHCID 20026—
Reactant2,3-DimercaptopropaneHCID 61217—
Product2,5,6-Trimethyl-2,3-dihydro-1,4-dithiineHCID 1292004836.5%

Reaction Steps

The procedure of Example 1(a) is repeated, using 1,2-propanedithiol and 3-chloro-2-butanone to give 2,3-dihydro-2,5,6-trimethyl-1,4-dithiin as a clear green liquid, bp 49.5°-51°/0.7 mm, yield 36.5%, NMR 1.36 (3d), 1.88 (6s), 2.4-3.6 (3m) (CDCl3). IR, 2905 (sh); 1605, 1410 (broad); 1250, 1155 (sh); 1065 (br); 730, 705.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04276422
Source datasetuspto-grants-1981_06
ORD IDord-706f690da3274d1689bb0fc0fd6d2147
Source noteuspto-grants-1981_06