4721-98-6, Name is 6,7-Dimethoxy-1-methyl-3,4-dihydroisoquinoline, belongs to isoquinoline compound, is a common compound. Formula: C12H15NO2In an article, once mentioned the new application about 4721-98-6.
A simple iridicycle catalyst for efficient transfer hydrogenation of n-heterocycles in water
A cyclometalated iridium complex is shown to catalyse the transfer hydrogenation of various nitrogen heterocycles, including but not limited to quinolines, isoquinolines, indoles and pyridinium salts, in an aqueous solution of HCO2H/HCO2Na under mild conditions. The catalyst shows excellent functional-group compatibility and high turnover number (up to 7500), with catalyst loadings as low as 0.01 mol % being feasible. Mechanistic investigation of the quinoline reduction suggests that the transfer hydrogenation proceeds via both 1,2- and 1,4-addition pathways, with the catalytic turnover being limited by the step of hydride transfer. An easily accessible iridicycle catalyst effects the transfer hydrogenation of a wide variety of N-heterocycles in water, including quinolines, isoquinolines, indoles, quinoxalines, and pyridines. The catalyst shows excellent functional-group compatibility and high turnover number (up to 7500), even with low catalyst loadings.
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Reference：
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem