Heteroarylation of 6-Aryl-2,3-dihydroimidazo[2,1-b]thiazole withN-(Ethoxycarbonyl)heteroaromatic Salts

Autor: David B. Staiger, Lendon N. Pridgen, Michael Anthony Mcguire, Louisa Lam Davis, Drake S. Eggleston, Ivan Lantos, S. C. Shilcrat, Lee Webb
Rok vydání: 1993
Předmět:
Zdroj: Journal of Heterocyclic Chemistry. 30:1663-1671
ISSN: 1943-5193
0022-152X
DOI: 10.1002/jhet.5570300634
Popis: The ethyl chloroformate salts of a variety of benzo-fused six membered π-deficient heteroaromatics, including quinoline, isoquinoline, 4-chloroquinoline, 3-bromoquinoline, phthalazine, and quinazoline, reacted with 6-aryl-2,3-dihydroimidazo[2,1-b]thiazole at the 5-position. The dihydroheteroaromatic adducts were oxidized by o-chloranil, sulfur, or electrochemical methodology to form the 5-heteroaromatic-6-aryl- 2,3-dihydroimidazo[2,1-b]thiazoles (10-15). In each example, the regiochemistry of addition to the heteroaromatic ring was established
Databáze: OpenAIRE