SYNTHESIS OF INDOLES THROUGH DEHYDROGENATION OF INDOLINES.

摘要

THROUGH DEHYDROGENATION OF INDOLINES OR THEIR SALTS, THE CORRESPONDING INDOLES ARE OBTAINED BY HAVING THE FORMULA (I). WHERE R1 AND R3 INDEPENDENTLY REPRESENT ONE OF THE OTHER OR HYDROGEN OR GROUPS RENT WITH 1 TO 4 ATOMS OF C, R2 IS HYDROGEN, A METHYL GROUP OR A CARBOXYL GROUP, R4 AND INDEPENDENTLY ONE OF OTHER AMINO, HYDROXY GROUPS, RENTAL GROUPS WITH 1 TO 4 ATOMS OF CO ALCOXI GROUPS FROM 1 TO 4 ATOMS OF C, OR, IN THE EVENT THAT R4 AND R5 ARE LINKED TO ATOMS OF ADJACENT, BOTH REMAINS MAY REPRESENT A LOT OF ALKYLENE DIOXI WITH 1 TO 4 ATOMS OF C. THE PROCESS ALLOWS THEM TO BE PRODUCED VERY PURE INDOLES WITH HIGH PERFORMANCE.