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Resolution of dl-tryptophane and dl-alpha-phenylethylamine

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1. IN THE RESOLUTION PROCESS WHEREIN AN OPTICALLY ACTIVE FORM OF AMINE RESOLVING AGENT AND N-LOWER-ALKANOYL-DLTRYPTOPHANE ARE REACTED TO OBTAIN A DIASTEREOISOMERIC SALT OF SAID TRYPTOPHANE AND AMINE AGENT WHICH IS THEN DECOMPOSED WITH A STRONG BASE TO LIBERATE THE DEXTRO TRYPTOPHANE FORM FROM THE DIASTEREOISOMERIC SALT THE IMPROVEMENT COMPRISING COMPLEMENTING THE AMINE RESOLVING AGENT BY COMBINING ONE EQUIVALENT OF AN OPTICALLY INACTIVE BASE WITH ABOUT TWO EQUIVALENTS OF N-LOWER ALKANOYLDL-TRYPTOPHANE AND ABOUT ONE EQUIVALENT OF L-A-PHENYLETHYLAMINE TO OBTAIN DIASTEREOISOMERIC SALT WHICH IS CAPABLE OF DECOMPOSITION TO YIELD THE DEXTRO TRYPTOPHANE FORM.
3. IN THE PROCESS OF RESOLVING DL-A-PHENYLETHYLAMINE WHEREIN N-ACETYL-L-TRYPTPHANE IS USED AS A RESOLVING AGENT THE IMPROVEMENT COMPRISING COMBINING TWO EQUIVALENTS OF SAID AMINE WITH ABOUT ONE EQUIVALENT OF SAID LTRYPTOPHANE AND ABOUT ONE EQUIVALENT OF OPTICALLY INACTIVE ACID TO FORM DIASTEREOISOMERIC SALT OF N-ACETYL-LTRYPTOPHANE AND L-A-PHENYLETHYLAMINE, ADDING ALKALI TO THE FORMED SALT TO CAUSE DECOMPOSITION THEREOF TO YIELD L-A-PHENYLETHYLAMINE AND ALKALI SALT OF N-ACETYL-L-TRYPTOPHANE.
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