In an article, published in an article,once mentioned the application of 80841-78-7,molecular formula is , is a conventional compound. this article was the specific content is as follows. 80841-78-7
Example 236.0 g (50.3 mmol) ethyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-{4-[2-(trityltetrazol-5-yl)-phenyl]phenyl}-methyl imidazole-5-carboxylate (Va) and 3.0 g (75.4 mmol) of NaOH were suspended in 413 ml dimethylacetamide. The suspension was then stirred at room temperature for 20 h and after that 6.9 g (50.3 mmol) of K2CO3, were added. The mixture was cooled to 0 C. and solution of 15.4 g (70.4 mmol) 4-chloromethyl-5-methyl-2-oxo-1,3-dioxolene in 39 ml of dimethylacetamide were slowly added. The mixture was slowly heated to 50 C. and stirred at this temperature for 2 h. After esterification was completed, the mixture was cooled to 10 C. and poured into a mixture of 625 ml of ethyl acetate and 625 ml of 10% NaCl, and stirred at 25 C. for 15 min. The phases were separated and organic phase was washed 2¡Á with 500 ml of 10% NaCl, dried over Na2SO4 and filtered. The filtrate was concentrated up to ? (approximately 270 g) at reduced pressure.To the resulting solution, 80 ml of ethanol and 8.3 ml (100 mmol) of conc. HCl were added and stirred at 24-26 C. for 3 h. To the cooled mixture 600 ml of water was added and pH of the suspension was estimated to 5 by addition of 5 M NaOH. The phases were stirred for 15 min and separated. Water phase was reextracted with 150 ml of ethyl acetate. Collected organic phases were dried over Na2SO4, filtered and concentrated under reduced pressure. 560 ml of ethyl acetate were added and the mixture was evaporated again. After that, 300 ml of ethyl acetate were added and the mixture was cooled to 20 C. and stirred for 1 h, filtered off and washed with 20 ml of fresh ethyl acetate. The yield of the product (I) was 21 g (75%).
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Reference£º
Patent; KRKA; US2009/131680; (2009); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem