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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 46708Generated: October 28, 2026

Water → HCID 20386919, compound

https://huagongshe.com/reaction/46708

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantDimethylformamideHCID 6228—
ReactantMethyl iodideHCID 6328—
ReactantCalcium CarbonateHCID 10112—
Reactant1[7-[(1,3-Dithia-2-cyclopentyl)]-3,3-dimethyl-1,5-dioxaspiro[5,4]-dec-8-yl]-trans-1-octene-3-ol tetrahydropyranyl etherHCID 86736702—
SolventAcetoneHCID 180—
ProductHCID 20386919HCID 20386919—

Reaction Steps

1.05 g [2.05 mmoles] of 1[7-[(1,3-dithia-2-cyclopentyl)]-3,3-dimethyl-1,5-dioxaspiro[5,4]-dec-8-yl]-trans-1-octene-3-ol-tetrahydropyranyl ether was stirred for 2 hours at 50° C. in 100 ml of DMF with 0.7 ml (10.3 mmoles) of methyl iodide, 1.4 g (14 moles) of CaCO3 and 0.4 ml of H2O. The solution was cooled, combined with 50 ml of acetone, filtered with suction to remove the precipitate and the filtrate was evaporated to dryness at 0.1 mm Hg. The residue was dissolved in ether, washed with H2O, dried over MgSO4 and the solvent was removed by distillation under reduced pressure. The oily residue which was not further purified showed in the infrared spectrum a strong carbonyl band at 1730 cm-1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04174458
Source datasetuspto-grants-1979_11
ORD IDord-50929daee64e4b7abec7201f16981ec6
Source noteuspto-grants-1979_11