6-HYDROXY-1,4-BENZODIOXANE Chemical Properties

Boiling point:

291℃

Density 

1.302

Flash point:

130℃

storage temp. 

Sealed in dry,Room Temperature

solubility 

Chloroform, Dichloromethane, Ethyl Acetate

pka

10.12±0.20(Predicted)

form 

Oil

color 

Brown

InChI

InChI=1S/C8H8O3/c9-6-1-2-7-8(5-6)11-4-3-10-7/h1-2,5,9H,3-4H2

InChIKey

DBPZCGJRCAALLW-UHFFFAOYSA-N

SMILES

O1C2=CC=C(O)C=C2OCC1

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39

HazardClass 

IRRITANT

HS Code 

2932990090

6-HYDROXY-1,4-BENZODIOXANE Usage And Synthesis

Chemical Properties

Yellow Oil

Uses

6-Hydroxy-1,4-benzodioxane (cas# 10288-72-9) is a compound useful in organic synthesis.

Synthesis

General procedure for the synthesis of 6-hydroxy-1,4-benzodioxane from 1,4-benzodioxane-6-carboxaldehyde: To a solution of 2,3-dihydro-benzo[1,4]dioxine-6-carboxaldehyde (30.0 g, 183 mmol) in methylene chloride (500 mL) was added m-chloroperoxybenzoic acid (mCPBA, 37.85 g, 219 mmol). The suspension was heated to 50 °C and the reaction was carried out for 16 hours. Upon completion of the reaction, saturated sodium bicarbonate (NaHCO3) solution was added and the mixture was extracted with dichloromethane (CH2Cl2). The organic phases were combined, concentrated in vacuum, dissolved in methanol (MeOH) and 4 M sodium hydroxide (NaOH, 200 mL) solution was added. After 2 hours of reaction, the mixture was acidified with 4 M hydrochloric acid (HCl) and extracted with ethyl acetate (EtOAc). The organic phases were combined, washed sequentially with saturated sodium bicarbonate (NaHCO3) solution and brine, concentrated in vacuum and dissolved in dichloromethane (CH2Cl2). The solution was filtered to remove the precipitate. The resulting solution was stirred with saturated sodium bicarbonate (NaHCO3) solution for 1 h. The organic phase was separated, dried over anhydrous magnesium sulfate (MgSO4), filtered and concentrated in vacuo to give 2,3-dihydro-benzo[1,4]dioxin-6-ol (26.92 g, 94% yield).

References

[1] Patent: US2005/209260, 2005, A1. Location in patent: Page/Page column 114
[2] Patent: US2007/49609, 2007, A1. Location in patent: Page/Page column 102
[3] Patent: WO2018/134254, 2018, A1. Location in patent: Page/Page column 68
[4] Chemistry and Biodiversity, 2010, vol. 7, # 4, p. 887 - 897
[5] Bioorganic and Medicinal Chemistry, 2002, vol. 10, # 6, p. 2051 - 2066

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