| abstract |
AN INDUSTRIAL PROCEDURE IS PROVIDED TO PRODUCE THE OPTICALLY ACTIVE AMINE DERIVATIVES OF ELEVADA PURITY, WHERE THE FORMATION OF COLLATERAL PRODUCTS IS CONTROLLED. IN SUCH PROCEDURE, THE (E) -2 (1,6,7,8-TETRAHIDRO-2H-INDENO [5,4-B] FURAN-8-ILIDEN) ETHYLAMINE IS SUBJECT TO THE ASYMETRICAL REDUCTION REACTION, AND IN ADDITION RESULTING REACTION PRODUCTS ARE CATALYTICALLY REDUCED UNDER AN ASYMETRIC REDUCTION REACTION TEMPERATURE CONDITION, AND IN ADDITION THE RESULTING REACTION PRODUCTS ARE CATALYTICALLY REDUCED UNDER A RACTION TEMPERATURE CONDITION FROM 40 DEGREES TO 3 DEGREES GRADE THEN THE (S) -2- (1,6,7,8, -TETRAHIDRO-2H-INDENO [5,4-B] FURAN-8-IL) ETHYLAMINE OBTAINED IS SUBMITTED TO PROPIONILATION REACTION, FOLLOWED BY CRYSTALLIZATION OF THE REACTION SOLUTION. |