Total Synthesis of Methyl 1,5,8-Trimethoxy-1 H -isochromene-3-carboxylate and Its Derivatives via Palladium-Catalyzed Annulation of 2-Alkynylbenzaldehydes.

Autor: Nardangeli, Nolan, Thomson, Jared, Topolovčan, Nikola, Hudlický, Tomáš
Předmět:
Zdroj: Synthesis; 2021, Vol. 53 Issue 21, p4110-4116, 7p
Abstrakt: A 7-step total synthesis of methyl 1,5,8-trimethoxy-1 H -isochromene-3-carboxylate and a 5-step synthesis of its C-3 derivatives are reported. Sonogashira coupling of 2-halobenzaldehydes with terminal acetylenes was employed to access 2-alkynylbenzaldehydes, which underwent a Pd-catalyzed annulation to afford the corresponding isochromene-containing products. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index