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2-Hexylthiophene

2-Hexylthiophene structure

2-Hexylthiophene 

structure
  • CAS No:

    18794-77-9

  • Formula:

    C10H16S

  • Chemical Name:

    2-Hexylthiophene

  • Synonyms:

    Thiophene,2-hexyl-;2-Hexylthiophene;α-Hexylthiophene;2-n-Hexylthiophene

  • Categories:

    Flavors and Fragrances  >  Synthetic Fragrances

Description

Light yellow liquid Colorless to pale yellow liquid; meat-like aroma


Colourless to pale yellow liquid; Meat-like aroma


2-Hexylthiophene is a heteroarene.

2-Hexylthiophene Basic Attributes

168.3

168.30

110220

242-579-4

82479467Q1

DTXSID50172120

38220090

Characteristics

28.2

4.4

white crystal

0.946 g/cm3 @ Temp: 20 °C

-39.15°C (estimate)

79-82 °C @ Press: 1 Torr

107°C

1.496

Soluble in most organic solvents and ethanol Soluble . Insoluble in water.

0.155mmHg at 25°C

Safety Information

NA 1993 / PGIII

3

22-36

26-37/39

Xn

P305 + P351 + P338

H302-H319-H413

|Warning|H302 (93.84%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, and P501|Aggregated GHS information provided by 1412 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

2-Hexylthiophene Use and Manufacturing

Methods of Manufacturing

To a solution of thiophene (5.0 g, 60 mmol) in THF (50 mL) was added dropwise n-BuLi (40.6 mL, 65 mmol, 1.6 M in hexane) at -78 °C. A solution of the compound 1 (2.00g, 23.80mmol) in anhydrous THF (30mL) was cooled down to−78°C under argon atmosphere, and n-BuLi (2.50M in hexanes, 9.5mL, 23.80mmol) was added dropwise. After stirring for 1h, 1-bromohexane (23.80mmol) was added dropwise and the reaction medium was slowly warmed to 0°C. Water (10mL) was added for quenching the reaction, and the aqueous layer was then extracted with dichloromethane (3×10mL). The organic layer was washed with water (10mL) and dried over MgSOTo a cooled (-70 °C) mixture of thiophene (17.6 g, 0.21 mol) in anhydrous THF (100 mL) was added dropwise a solution of n-BuLi (137.5 ml, 1 , 6 M, 0.22 mol) in hexane. After stirring for 1 hour at 0 To a solution of thiophene (15 g, 0.178 mole) in 200 niL of dry THF at - 78In a 1 L round-bottom flask, 50 g of thiophene (0.594 mol) was dissolved in 500 mL of tetrahydrofuran (THF), followed by stirring at -78° C. for 30 minutes. 371 mL of n-butyllithium (1.6M hexane solution) (0.594 mol) was slowly dropwise added thereto, followed by stirring for 2 hours. The resultant solution was slowly added with 98 g of 1-bromohexane (0.594 mol), stirred at room temperature for 3 hours, and added with 200 mL of water. The organic layer was separated by ethyl acetate (AcEt), and the organic solvent was removed under reduced pressure so as to provide oil. The oil layer was vacuum-distillated so as to provide 52.2 g of Formula 5-a (yield 52percent).Step ii) Production of 2-hexylthiophene

Uses

An important intermediate for medicines and pesticides, an important intermediate for the synthesis of optoelectronic materials

Food additives -> Flavoring Agents|Flavoring Agents -> JECFA Flavorings Index

Flavoring Agents

Computed Properties

Molecular Weight:168.30
XLogP3:4.4
Hydrogen Bond Acceptor Count:1
Rotatable Bond Count:5
Exact Mass:168.09727168
Monoisotopic Mass:168.09727168
Topological Polar Surface Area:28.2
Heavy Atom Count:11
Complexity:90.9
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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