Efficient Synthesis of Benzofuran Fused 1-Azaazulenet
H. Fujii, Y. Hironaka, N. Abe
Heterocycles, 2018, 99, ASAP.
DOI : 10.3987/COM-18-S(F)69

Abstract: The synthesis of benzofuran fused 1-azaazulene (cyclohepta[d]benzo[4,5]furano[2,3-b]pyrrole) (4) was achieved by one pot reaction of 2-chloro-1-azaazulene (1) with 2-iodophenol (2) under the conditions in the presence of Pd(OAc)2 and without using a ligand.