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Trans-Ethyl p-methoxycinnamate

 Last Update: 2022-06-04
 Source: Internet
 Author: User

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3 8 7 16

7 1 cm

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Trans-Ethyl p-methoxycinnamate

Ethylp-methoxy-trans-cinnamate

[Synonyms] ethyl p-methoxycinnamate , EMPC

【Structural formula】

[Molecular formula and molecular weight] C ₁₂ H ₁₄ O ₃ ; 206.

[Source] Synthesis

【Properties】Colorless crystals

This product is soluble in chloroform

Melting point: 48～50℃

【Purity Check】

TLC

Developing solvent n-hexane - ethyl acetate (18:1)

Check under UV lamp (254nm)

Eluent petroleum ether - ethyl acetate (85:15)

Check the color development of phosphomolybdic acid ethanol solution, heated at 105℃, inspected under sunlight

Gas chromatography

Column 10% PEG20000(2m×2mm)

Column temperature starting temperature 40℃, ending temperature 220℃, heating rate 8℃/min

Inlet temperature 240℃

Detector temperature 250℃

[Structural identification] 309,226

1707, 1630, 1603, 1512, 1024, 831

EI-MS m/z: 206[M] ⁺ , 178, 161, 147, 134, 118, 103, 89, 77

¹ H-NMR (CDCl ₃ ) δ: 1.

¹³ C-NMR (CDCl ₃ ) δ: 55.

【Storage】Dry and airtight

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