“…In recent years, following the development of the cyanomethylation strategy, a series of cyanomethylation agents have been exploited for use in this method. Cyanomethylation agents include acetonitrile and acetonitrile derivatives,3 trimethylsilylacetonitrile (TMSAN),4 halideacetonitrile,5 and isoxazole,2b, 6 which provide new possibilities for the introduction of cyano groups into organic compounds. However, these methods still suffer from some inherentlimitations, such as harsh conditions or a narrow scope of substrates.…”