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ChemicalBook CAS DataBase List EPINASTINE HYDROCHLORIDE
108929-04-0

EPINASTINE HYDROCHLORIDE synthesis

8synthesis methods
80012-43-7 Synthesis
Epinastine

80012-43-7
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Yield: 92%

Reaction Conditions:

with hydrogenchloride in 1,4-dioxane;water;ethyl acetate for 0.5 h;Product distribution / selectivity;

Steps:

F
100 gm of 3-ammo-9,13b-dihydro-lH-dibenzo[c,fJimidazo[l,5- a] azepine was suspended in 0.3 liters 1,4-dioxane and to this 41.8 ml cone. HCl was added. The clear solution obtained was rapidly added to 6.1 liters ethyl acetate followed by stirring for 30 minutes, filtered the solution at ambient temperature to isolate Epinastine HCl Form III. Yield: 108 gm (92-96%)

References:

USV LIMITED WO2009/63504, 2009, A2 Location in patent:Page/Page column 25

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