Negishi, Ei-ichi published the artcileDirect synthesis of heteroarylethynes via palladium-catalyzed coupling of heteroaryl halides with ethynylzinc halides. Its application to an efficient synthesis of a thiophenelactone from Chamaemelum nobile L, Computed Properties of 69626-75-1, the publication is Heterocycles (1997), 209-214, database is CAplus.
A variety of terminal alkynes containing a heteroaryl group can be directly and selectively synthesized by the Pd-catalyzed coupling of heteroaryl iodides or bromides with ethynylzinc halides. Various compounds of this class containing furan, thiophene, and pyridine have been prepared, and the procedure has been applied to an efficient and selective synthesis of a thiophenelactone from Chamaemelum nobile L.
Heterocycles published new progress about 69626-75-1. 69626-75-1 belongs to benzofurans, auxiliary class Iodide,Benzofuran, name is 2-Iodobenzofuran, and the molecular formula is C8H5IO, Computed Properties of 69626-75-1.
Referemce:
https://en.wikipedia.org/wiki/Benzofuran,
Benzofuran | C8H6O – PubChem