Chemistry is traditionally divided into organic and inorganic chemistry. category: Isoquinolines, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 4602-73-7
Tandem catalysis, the use of a single catalyst to promote two or more mechanistically distinct cycles in one pot to assemble complex organic molecules, is an attractive target. In this paper, we report a reductant-triggered tandem palladium catalysis process that rapidly assembles 3,4-fused tricyclic indoles from three readily available starting materials. This tandem process involves a Pd0-catalyzed in situ coupling/cyclization/Michael addition reaction to install simultaneously two functional groups at the C4 and the C3 positions of indoles. This is followed by a Pd0-catalyzed intramolecular cyclization which builds a seven-membered C4, C3-bridge. Sodium formate is used to trigger the necessary switching between the palladium catalysed reactions. (Figure presented.).
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Reference：
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem