Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of Isoquinoline-5-carbaldehyde, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 80278-67-7
Treatment of heteroaryl-aldehydes with diethyl cyanophosphonate in the presence of a catalytic amount of LiCN affords phosphorylated cyanohydrins which are reduced in situ with SmI2 to give heteroaryl-acetonitriles in generally good overall yields (50-100%). The generality of the process is demonstrated.
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Reference：
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem