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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1680915Generated: October 30, 2026

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

https://huagongshe.com/reaction/1680915

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-Chloro-2-butanoneHCID 20026—
Reactant1,2-ButanedithiolHCID 61829—
Product2-Ethyl-5,6-dimethyl-2,3-dihydro-1,4-dithiineHCID 1292005135%

Reaction Steps

The procedure of Example 1(a) is repeated, using 1,2-butanedithiol and 3-chloro-2-butanone to give 2-ethyl-2,3-dihydro-5,6-dimethyl-1,4-dithiin as a colorless oil, bp 68°-81°/0.7, yield 35%, NMR 1.01 (3t), 1.4-2.9 (2m), 1.87 (6s), 2.6-3.4 (3m). IR, 2910 (sh); 1610 (sh); 1410, 1220 (sh); 1155 (sh); 1070, 735, 700.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04276422
Source datasetuspto-grants-1981_06
ORD IDord-08925d3bef664c6e948b2c1e98086f98
Source noteuspto-grants-1981_06