METHOD FOR STABILIZING REACTIVE IMINES, STABLE IMINIUM SALTS OBTAINED BY THIS METHOD AND APPLICATION OF SUCH SALTS

摘要

Transforming the reactive imines into stable salts of IMINIUM salts by a reaction of addition of the amine in the dilute state, on a strong solid acid of large specific surface; THE STEAM OR GASEOUS IMINE33 CAN BE PASSED ON OR AT THE ORDINARY TEMPERATURE ON THE STRONG SOLID ACID16 OR AT LOW TEMPERATURE (EN 26) IN THE FORM OF A DILUTED SOLVENT SOLUTION ORGANIC31 OF LOW MELTING POINT INTRODUCED BY A VALVE32, WITH STRONG SOLID ACID (PLACE THEN IN 26); ACID IS IN PARTICULAR A SULFONATED RESIN; THE IMINES ARE IN PARTICULAR THOSE HAVING THE MOST SIMPLE MOLECULAR STRUCTURES. / P P APPLICATION OF IMINIUM SALTS OBTAINED IN EN13 OR EN26: MANUFACTURING INTERMEDIATES FOR THE SYNTHESIS OF ALKALOIDS AND OF ALKALOIDS OF THE QUINUCLIDINE OR ISOQUINUCLIDINE TYPE, BY ADDITION WITH NUCLEOPHILS OR CYCLOADDITION WITH OLEFINIC COMPOUNDS. / P