Products Categories
CAS No.: | 92-44-4 |
---|---|
Name: | 2,3-Dihydroxynaphthalene |
Article Data: | 32 |
Molecular Structure: | |
Formula: | C10H8O2 |
Molecular Weight: | 160.172 |
Synonyms: | 2,3-Naphthalenediol;NSC 8707;Naphthalene-2,3-diol; |
EINECS: | 202-156-7 |
Density: | 1.33 g/cm3 |
Melting Point: | 161-165 °C(lit.) |
Boiling Point: | 353.9 °C at 760 mmHg |
Flash Point: | 181 °C |
Solubility: | slightly soluble in water |
Appearance: | Off white to redish white powder |
Hazard Symbols: | Xi |
Risk Codes: | 36/37/38 |
Safety: | 26-37/39 |
PSA: | 40.46000 |
LogP: | 2.25100 |
2,3-naphthalenediol
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In neat (no solvent, solid phase) at 20℃; for 0.583333h; Green chemistry; | 95% |
2,3-naphthalenediol
Conditions | Yield |
---|---|
With aluminum (III) chloride In benzene for 5h; Reflux; | 92% |
Conditions | Yield |
---|---|
With 2,4,6-trimethylphenylcarbene copper; dihydrogen peroxide; trimethyldodecylammonium chloride In octane at 50℃; for 7h; Reagent/catalyst; | 83.8% |
Multi-step reaction with 2 steps 1.1: boron tribromide / hexane / 60 h / 120 °C / Sealed tube 1.2: 0.03 h / 0 °C / Schlenk technique 2.1: 3-chloro-benzenecarboperoxoic acid / water; ethanol / 6 h / 0 - 20 °C View Scheme |
Conditions | Yield |
---|---|
With orcinol; Acetobacterium dehalogenans veratrol-O-demethylase; Desulfitobacterium hafniense methyltransferase dhaf4611 In aq. buffer at 35℃; for 24h; pH=6.5; Inert atmosphere; Enzymatic reaction; regioselective reaction; | A 81% B 19% |
3-tert-butoxy-2-hydroxynaphthalene
A
6-tert-butyl-2,3-dihydroxynaphthalene
B
2,3-naphthalenediol
Conditions | Yield |
---|---|
With sulfuric acid In n-heptane; dichloromethane at 20℃; for 2h; | A 76.7% B n/a |
Conditions | Yield |
---|---|
With aluminum tri-bromide In ethanethiol at 0℃; for 0.5h; | 73% |
With aluminum tri-bromide In ethanethiol at 0℃; for 0.5h; | 73% |
Conditions | Yield |
---|---|
With sodium carbonate at 145℃; for 5h; | A 19% B 67% C 46% D 14% |
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 2h; | 60% |
syn-1,2:3,4-naphthalene dioxide
2,3-naphthalenediol
Conditions | Yield |
---|---|
In xylene at 190℃; for 24h; | 50% |
Conditions | Yield |
---|---|
beim Schmelzen; Erwaermen des entstehenden 2.3-Dioxy-naphthalin-sulfonsaeure-(6) auf 280-320grad; |
What can I do for you?
Get Best Price
The 2,3-Dihydroxynaphthalene, with the CAS registry number 92-44-4, is also known as 2,3-Naphthalenediol. It belongs to the product categories of Aromatics; Naphthalene derivatives. Its EINECS number is 202-156-7. This chemical's molecular formula is C10H8O2 and molecular weight is 160.17. What's more, its systematic name is naphthalene-2,3-diol. It should be sealed and stored in a cool and dry place. Moreover, it should be protected from light. It is used in organic synthesis and dye manufacture.
Physical properties of 2,3-Dihydroxynaphthalene are: (1)ACD/LogP: 2.11; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.11; (4)ACD/LogD (pH 7.4): 2.1; (5)ACD/BCF (pH 5.5): 23.66; (6)ACD/BCF (pH 7.4): 23.2; (7)ACD/KOC (pH 5.5): 335.05; (8)ACD/KOC (pH 7.4): 328.55; (9)#H bond acceptors: 2; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 18.46 Å2; (13)Index of Refraction: 1.725; (14)Molar Refractivity: 47.85 cm3; (15)Molar Volume: 120.4 cm3; (16)Polarizability: 18.97×10-24cm3; (17)Surface Tension: 64.4 dyne/cm; (18)Density: 1.33 g/cm3; (19)Flash Point: 181 °C; (20)Enthalpy of Vaporization: 62.25 kJ/mol; (21)Boiling Point: 353.9 °C at 760 mmHg; (22)Vapour Pressure: 1.71E-05 mmHg at 25°C.
Preparation: this chemical can be prepared by naphtho[2,3-d][1,3]dioxole at the temperature of 0 °C. This reaction will need reagent AlBr3 and solvent C2H5SH with the reaction time of 30 min. The yield is about 73%.
Uses of 2,3-Dihydroxynaphthalene: it can be used to produce dinaphtho[2,3-b;2',3'-e][1,4]dioxin-5,14-dione at the temperature of 100 °C. It will need reagent pyridine with the reaction time of 6 hours. The yield is about 87%.
When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing and gloves.
You can still convert the following datas into molecular structure:
(1)SMILES: Oc2cc1c(cccc1)cc2O
(2)Std. InChI: InChI=1S/C10H8O2/c11-9-5-7-3-1-2-4-8(7)6-10(9)12/h1-6,11-12H
(3)Std. InChIKey: JRNGUTKWMSBIBF-UHFFFAOYSA-N
The toxicity data is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
mouse | LD50 | intravenous | 56mg/kg (56mg/kg) | U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#03884. |