中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-(6,7-二甲氧基-1-异喹啉基)苯胺 | 4-(6,7-dimethoxy-1-isoquinolinyl)benzenamine | 83633-12-9 | C17H16N2O2 | 280.326 |
—— | N-(2-chloroethyl)-4-(6,7-dimethoxy-1-isoquinolinyl)benzenamine | 83633-21-0 | C19H19ClN2O2 | 342.825 |
—— | N-[4-(6,7-dimethoxy-1-isoquinolinyl)phenyl]propenamide | 83633-14-1 | C20H18N2O3 | 334.375 |
—— | 2-chloro-N-[4-(6,7-dimethoxy-1-isoquinolinyl)phenyl]acetamide | 83633-17-4 | C19H17ClN2O3 | 356.809 |
—— | N,N-bis(2-chloroethyl)-4-(6,7-dimethoxy-1-isoquinolinyl)benzenamine | 83633-32-3 | C21H22Cl2N2O2 | 405.324 |
—— | methyl (E)-4-{[4-(6,7-dimethoxy-1-isoquinolinyl)phenyl]amino}-4-oxo-2-butenoate | 83633-29-8 | C22H20N2O5 | 392.411 |
—— | methyl (Z)-4-{[4-(6,7-dimethoxy-1-isoquinolinyl)phenyl]amino}-4-oxo-2-butenoate | 83633-25-4 | C22H20N2O5 | 392.411 |
Metal free dehydrogenation of various substituted tetrahydroisoquinolines via a simple and convenient metal free, atom economical route for the synthesis of corresponding isoquinolines under oxygen atmosphere in N-methyl-2-pyrollidone (NMP) is described. Metal free dehydrogenation was carried out without the use of additive or base. A scope of the methodology was demonstrated for a number of aryl and heteroaryl substitutions present at C1 position and ester moiety at C3 position and was found to be good substrates. Substituted isoquinolines (3a–3h) and their esters (3i–3m) were synthesized in very good to excellent yields.