| abstract |
PROCEDURE FOR OBTAINING DERIVATIVES OF ORTHOCONDENSED PIRROLO AND ITS METAL SALTS AND THE ADDITION OF ACIDS AND BASES, OF FORMULA (I), IN WHICH A, R AND R1 CAN BE SEVERAL RADICALS; YMYN VALEN 1 OR 2 AND 0-2, RESPECTIVELY. CONSISTS OF THE HYDROLYSIS REACTION OF A NITRILE OF FORMULA (II), IN WHICH ALL THE SYMBOLS HAVE THE SAME MEANING AS IN FORMULA (I), FOLLOWED BY THE SEPARATION OF THE PRODUCT OBTAINED. HYDROLYSIS IS PERFORMED BY ANY CONVENTIONAL METHOD. THESE COMPOUNDS HAVE APPLICATIONS AS INTERMEDIATES IN THE SYNTHESIS OF MEDICINES. |