Synthesis of New Schiff Base Ether: p-n-(Dimethylamino)-benzylidene-p-dodecyloxyaniline

Ha, Sie‐Tiong; Ong, Lay-Khoon; Wong, Joanna Pik-Wan; Win, Yip-Foo; Koh, Teck-Ming

doi:10.3390/m598

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Preparation Of Benzothiazole2

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2009

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Cited by 6 publications

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“…In analogy to a recently published procedure [11], benzothiazole 1 (4.55 g, 20 mmol) in acetone (40 ml), was added to a solution of potassium hydroxide (1.12 g, 20 mmol) in distilled water (5 ml). This was followed by addition of a small amount of potassium iodide into the mixture.…”

Section: Preparation Of Benzothiazolementioning

confidence: 99%

Synthesis of 2-(4-Propyloxyphenyl)benzothiazole

Koh

Ong

et al. 2009

Molbank

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Section: Preparation Of Benzothiazolementioning

confidence: 99%

Synthesis of 2-(4-Propyloxyphenyl)benzothiazole

Koh

Ong

et al. 2009

Molbank

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“…In analogy to a recently published procedure [10], benzothiazole 1 (4.55 g, 20 mmol) in acetone (40 mL), was added to a solution of potassium hydroxide (1.12 g, 20 mmol) in distilled water (5 mL). This was followed by addition of a small amount of potassium iodide into the mixture.…”

Section: Preparation Of Benzothiazolementioning

confidence: 99%

2-(4-Pentyloxyphenyl)benzothiazole

Koh

Ong

et al. 2009

Molbank

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2-(4-Pentyloxyphenyl)benzothiazole was synthesized and its IR, 1 H NMR and MS spectroscopic data are presented.Keywords: 2-(4-pentyloxyphenyl)benzothiazole; heterocyclic fused-ring; ether chainThere has been considerable interest in heterocyclic molecules due to their diversified molecular design and remarkable optical [1-3], liquid crystalline [4] and electronic properties [5]. In view of the importance of these compounds, chemists are prompted to generate the derivatives by introducing different substituents into the existing skeleton of the molecule [6][7][8].Preparation of Benzothiazole 1: This intermediate compound was first reported by Bogert and Corbitt in year 1926 [9]. 2-Aminothiophenol (5.01 g, 40 mmol) and 4-hydroxybenzaldehyde (4.88 g, 40 mmol) in absolute ethanol (40 mL) was heated under reflux for 6 hours. The reaction mixture was subsequently cooled to room temperature, then distilled water (60 mL) was added slowly until the mixture turned cloudy. It was kept overnight at 20 o C and the solid formed was filtered and washed with cold ethanol:water (1:1.5) and dichloromethane. OPEN ACCESS

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