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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1979516Generated: October 31, 2026

Methyl iodide → HCID 20439309, compound

https://huagongshe.com/reaction/1979516

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl iodideHCID 6328—
Reactant1-(1,2,3,4-Tetrahydro-4,4-dimethyl-1-naphthalenyl)-1-propanoneHCID 166445—
Solventtert-ButanolHCID 6386—
ProductHCID 20439309HCID 2043930952.2%

Reaction Conditions

Temperature5 °C

Reaction Steps

5.6 g of potassium tert.butylate are placed in 42.5 ml of tert.butanol and 10.8 g of 1,1-dimethyl-4-propionyl-tetralin are added dropwise thereto. The mixture is stirred for 1 hour, cooled to 5° C. and 8.5 g of methyl iodide are added. The mixture is stirred for a further 3 hours, a further 4.2 g of methyl iodide are added, the cooling source is removed and the mixture is stirred for a further 15 hours. The bulk of the tert.butanol is then removed by evaporation, the residue is taken up in ether, washed neutral with water, dried over sodium sulphate, evaporated and distilled. There are obtained 6 g of 1,1,4-trimethyl-4-propionyl-tetralin of boiling point 79° C./0.05 mmHg; nD20 =1.5249; yield 52%. Odour: fruity, woody.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04481133
Source datasetuspto-grants-1984_11
ORD IDord-9fc0a3a6609640e9b8bb53742a3c4a22
Source noteuspto-grants-1984_11