Hydrochloric Acid → HCID 70589990, compound

HRID 840028Notes

Reaction equation

HRID 840028 reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([CH:12](Cl)[C:13]([O:15][CH3:16])=[O:14])[CH:6]=[CH:5]2.[OH-].[Na+].C([OH:22])C.Cl>C(Cl)Cl>[CH3:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([CH:12]([OH:22])[C:13]([O:15][CH3:16])=[O:14])[CH:6]=[CH:5]2

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 702EthanolHCID 14798Sodium HydroxideHCID 86733920Methyl 6-methyl-2-naphthyl-alpha-chloroacetate

Product 1

HCID 70589990HCID 70589990, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of 25 g. of methyl 6-methyl-2naphthyl-α-chloroacetate, 10 g. of sodium hydroxide, and 200 ml. of ethanol is refluxed for 2 hours. The cooled mixture is acidified by the addition of 1N hydrochloric acid. The resulting product, methyl 6-methyl-2naphthyl-α-hydroxyacetate, is isolated by extractions with methylene chloride. The product is oxidized by means of the oxidation procedure described in Example 6 to give methyl 6-methyl-2-naphthyl-α-oxoacetate. The latter product is refluxed with 31 g. of difluoromethylene triphenyl phosphorane (prepared by allowing sodium chlorodifluoroacetate to react with triphenyl phosphine in diethyl ether) in 150 ml. of benzene. The resulting mixture is distilled under vacuum. The distillate is evaporated to yield methyl 2-naphthyl-α,α-difluoromethyleneacetate.

Workup

  1. additionA mixture of 25 g

Sources & evidence

ORD record
ord-b8c308fa6b9143e8a45e22450b129c99
Source dataset
uspto-grants-1978_06
Patent number
US04097674

Reaction notes

Loading…