cas 482577-59-3, L-VALINE, N-[(2'-CYANO[1,1'-BIPHENYL]-4-YL)METHYL]-, METHYL ESTER, MONOHYDROCHLORIDE | Articles data ｜lookchem

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482577-59-3

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A method for preparing methyl valsartan
The invention provides a preparation method of valsartan. The preparation method has the technical effects that amide methyl ester and sodium azide are used as raw materials and are catalyzed by amine salt to carry out tetrazole formation reaction; side effects are minimized by controlling the reaction course; main products are furthest generated; unreacted raw materials are recycled and reused; the yield in the preparation method is increased by more than 10% relative to the yields in existing processes; compared with the existing processes, the method has the effect that plenty of high-toxicity wastewater is no longer generated, and is easy to be widely popularized industrially.
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Paragraph 0055-0056

(2017/08/25)

AN IMPROVED PROCESS FOR THE PREPARATION OF N-PENTANOYL-N-[[2'-(1H-TETRAZOL-5-YI)[1,1'-BIPHENYL]-4-YI]METHYL]-L-VALINE
Disclosed herein is an improved process for the preparation of pure N-Pentanoyl-N-[[2'- (1h-Tetrazol-5-Y1)[1,1'-Biphenyl]-4-Yl]Methyl]-L-Valine employing highly active carbon.
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Page/Page column 14

(2012/05/19)

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Chemical Properties

Melting Point: 186 °C
Solubility:Chloroform (Slightly), Methanol (Slightly)
Storage Temp.:Inert atmosphere,Room Temperature
PSA: 62.12000
LogP: 4.70538

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