Mechanistic Insight into the Halogen Dance Rearrangement of Iodooxazoles

Autor: Mathieu F. Chellat, James P. Stambuli, Nicolas Proust
Rok vydání: 2011
Předmět:
Zdroj: Synthesis. 2011:3083-3088
ISSN: 1437-210X
0039-7881
DOI: 10.1055/s-0030-1260164
Popis: The lithium diisopropylamide mediated halogen dance reaction of 5-iodooxazoles to generate 4-iodooxazoles was studied. The mechanism of the reaction was investigated and compared to the reported mechanism for the halogen dance rearrangement of 5-bromooxazoles. Reaction conditions were optimized and yields of iodooxazole were improved to a synthetically useful level. The use of 2-(butylsulfanyl)-5-bromooxazole as an organic catalyst turned out to be the cornerstone for the success of this reaction.
Databáze: OpenAIRE