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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1073379Generated: October 31, 2026

Sodium Hydroxide → HCID 22158838, compound

https://huagongshe.com/reaction/1073379

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantBromomethyl methyl etherHCID 83093—
Reactant7-hydroxy-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-4-oneHCID 600902—
CatalystBenzyl triethylammonium chlorideHCID 66133—
SolventDichloromethaneHCID 6344—
ProductHCID 22158838HCID 2215883890%

Reaction Conditions

Temperature20 °C

Reaction Steps

A mixture of 20 ml of 10% sodium hydroxide solution, 50 ml of dichloro methane, 0.5 g (2 millimoles) of triethyl benzyl ammonium chloride and 0.9 g (10 millimoles) of 7-hydroxy-2,2-dimethyl-4-chromanone is intensively stirred at 20° C. for 30 minutes. To the mixture 3.1 g (2 ml, 25 millimoles) of bromomethyl-methyl-ether are added. The reaction mixture is stirred for a further 30 minutes, the organic phase is separated, washed twice with 50 ml. of water each, dried and the solvent is removed. The residue is crystallized from 70% ethanol. Thus 2.1 g of the desired compound are obtained, yield 90% . Mp.: 77°-79° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04968819
Source datasetuspto-grants-1990_11
ORD IDord-4e284ac8153c4b769501aa37f10c7442
Source noteuspto-grants-1990_11