Chemistry is traditionally divided into organic and inorganic chemistry. Safety of 1-Chloroisoquinoline, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 19493-44-8
Room temperature cross-coupling of highly functionalized organozinc reagents with thiomethylated N-heterocycles by nickel catalysis
“Chemical Equation Presented” A variety of thiomethyl-substituted N-heterocycles such as pyridines, isoquinolines, pyrimidines, pyrazines, pyridazines, quinazolines, triazines, benzothiazoles, or benzoxazoles undergo smooth Ni-catalyzed cross-coupling reactions with functionalized aryl-, heteroaryl-, alkyl-, and benzylic zinc reagents using an inexpensive Ni(acac)2/ DPE-Phos catalytic system at 25C.
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Reference：
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem