Three different substituted thiazoles have been successfully synthesized from readily available propargylic alcohols. Various secondary propargylic alcohols or tertiary propargylic alcohols participated well in the reaction, providing the desired products in good yields. This method provides a flexible and rapid route to substituted thiazoles.
Scandium-Catalyzed Carbon−Carbon Bond-Forming Reactions of 3-Sulfanyl- and 3-Selanylpropargyl Alcohols
作者:Mitsuhiro Yoshimatsu、Tokutaro Otani、Saki Matsuda、Teruhisa Yamamoto、Arisa Sawa
DOI:10.1021/ol801533p
日期:2008.10.2
The scandium-catalyzed substitution reactions of the phenylsulfanyl and phenylselanyl propargyl alcohols 3a-i and 7a-h regioselectively proceeded to give the propargylated compounds 4 and 8 in high yields.
Ruthenium-Catalyzed Propargylation of Aromatic Compounds with Propargylic Alcohols
Reactions of propargylicalcohols bearing a terminalalkyne moiety with aromatic compounds in the presence of a catalytic amount of thiolate-bridged diruthenium complexes give the corresponding propargylated aromatic compounds in high yields with complete selectivity. Intramolecular reactions of propargylicalcohols bearing an aromatic moiety proceed smoothly to afford the cyclized products in high