Experimental 7-Methoxy-8-nitroisoquinoline.-To a stirred solution of 7-methoxyi~ oquinoline~(7.0 8.) in concentrated sulfuric acid (100 cc.) was added portionwise a solution of potassium nitrate (5.0 g.) in concentrated sulfuric acid (35 cc.) while the temperature was maintained at 0-5" by cooling. After stirring for an additional one-half hour at G5", the reaction mixture was poured onto cracked ice. The resulting solution was basified and the ...