1,2,3,4-四氢-6-异喹啉溴酸盐 、 甲酰胺 以
水 为溶剂,
反应 1.0h,
以34.0 g of 2-formyl-1,2,3,4-tetrahydro-6-hydroxy-isoquinoline are obtained的产率得到6-Hydroxy-3,4-dihydro-1H-isoquinoline-2-carbaldehyde
Isoquinoline compounds having .beta.-receptor blocking activity, particularly for the heart, and having the formula ##STR1## and salts thereof with physiologically tolerable acids, wherein R.sub.1 is hydrogen or methyl, R.sub.2 is hydrogen or lower alkyl, R.sub.3 is hydrogen or methoxy, and R.sub.4 is isopropyl or tertiary butyl. A method for making such compounds. Pharmaceutical compositions containing such compounds.