Warta Industri

Sintesis 1,3,5-trimethoxybenzene

2024-08-05

Preparation lan nggunakake 1,3,5-trimethoxybenzene


1,3,5-Trimethoxybenzenebisa disiapake saka1,3,5-tribromidabenzena lan natrium metanol ing reaksi katalis dening cuprous klorida lan metil formate. Reaksi karo N-bromosuccinimide ing karbon tetraklorida kanggo menehi 2-bromo-1,3,5-trimethoxybenzene. Bisa digunakake minangka standar internal spektrum hidrogen NMR.


Sintesis 1,3,5-trimethoxybenzene


Salah sawijining metode sintetik 1,3,5-trimethoxybenzene kaya ing ngisor iki:


1, Nyampur etanol 95% lan benzena karo 2,4,6-tribromobenzene, panas lan dissolve; mboko sithik nambah asam sulfat pekat kanggo 1-2 jam, aduk, njaga suhu ing 50-60 derajat Celsius; banjur nambah NaNO2 ing batch, godhok kanggo 2-3 jam; kelangan, Filter, wisuh kanggo netral, garing kanggo njaluk ngalangi 1,3,5-tribromobenzene.


2, nyampur 10g logam sodium lan 80ml metanol larutan natrium metanol, banjur nambah 80ml dimethylformamide, 2gCu2I2 lan 20g1,3,5-tribromobenzene, dadi panas kanggo 90 derajat Celsius, aduk reaksi refluks kanggo 3 jam, filtrasi, filtrate meksa wangun methanol uap. , uap karo distilasi uap, distilasi cooling crystallization, filtrasi, pangatusan, yaiku1,3,5-trimethoxybenzene.


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