Thianaphthene Property

Melting point:

30-33 °C

Boiling point:

221-222 °C(lit.)

Density 

1.149 g/mL at 25 °C(lit.)

refractive index 

1.6332 (estimate)

Flash point:

>230 °F

storage temp. 

Store below +30°C.

solubility 

0.13g/l

form 

Crystalline Solid

pka

32.4

Specific Gravity

1.149

color 

White to pink or yellow

Water Solubility 

insoluble

Merck 

14,9303

BRN 

80580

InChIKey

FCEHBMOGCRZNNI-UHFFFAOYSA-N

LogP

3.120

CAS DataBase Reference

95-15-8(CAS DataBase Reference)

NIST Chemistry Reference

Benzo[b]thiophene(95-15-8)

EPA Substance Registry System

Benzo[b]thiophene (95-15-8)

Safety

Hazard Codes 

Xn,Xi,N

Risk Statements 

22-36/37/38-20/21/22-51/53

Safety Statements 

22-24/25-36-26-61

RIDADR 

UN3077

WGK Germany 

3

Hazard Note 

Irritant

TSCA 

Yes

HazardClass 

9

PackingGroup 

III

HS Code 

29349990

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P273Avoid release to the environment.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P501Dispose of contents/container to..…

Thianaphthene Chemical Properties,Usage,Production

Chemical Properties

WHITE TO RED CRYSTALLINE LOW MELTING SOLID

Uses

Benzo[b]thiophene has application in organic as well as pharmaceutical industry as a component in the synthesis of Raloxifene, a breast cancer therapeutic, or hydrodesulfurization reactions.

Uses

Benzo[b]thiophene is used in the preparation of 2-thianapthenylphenyllithium, via metalation by n-butyllithium. It is used in organic as well as pharmaceutical industry as a component in the synthesis of raloxifene, a breast cancer therapeutic, or hydrodesulfurization reactions.

Uses

Thianaphthene may be used in the preparation of 2-thianapthenylphenyllithium, via metalation by n-butyllithium.

Uses

manufacture of pharmaceuticals, thioindigo.

Definition

ChEBI: 1-benzothiophene is a benzothiophene and a member of 1-benzothiophenes.

Application

Thianaphthene may be used in the preparation of 2-thianapthenylphenyllithium, via metalation by n-butyllithium.
Reaction of ethyl diazoacetate with thianaphthene has been reported.

Synthesis Reference(s)

Journal of the American Chemical Society, 69, p. 2008, 1947 DOI: 10.1021/ja01200a053
Tetrahedron, 27, p. 1253, 1971 DOI: 10.1016/S0040-4020(01)90874-9

General Description

Reaction of ethyl diazoacetate with thianaphthene has been reported.

Purification Methods

1-Benzothiophene has the odour of naphthalene. If the IR spectrum is not very good, then suspend it in a faintly alkaline aqueous solution and steam distil it. Extract the distillate with Et2O, dry the extract (CaCl2), filter, evaporate the solvent and fractionate the residue. The distillate sets solid. The sulfoxide has m 142o, the picrate has m 148-149o (yellow crystals from EtOH) and the styphnate has m 136-137o. [Hansch & Lindwall J Org Chem 10, 381 1945, Meyer & Meyer Chem Ber 52B 1249 1919, Weisgerber & Kruber 53 1551 1920, Iddon & Scrowston Adv Heterocycl Chem 11 177 1970, Beilstein 17/2 V 6.]