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PIDA-mediated synthesis of oxazoles through oxidative cycloisomerization of propargylamides

โœ Scribed by Akio Saito; Asami Matsumoto; Yuji Hanzawa

Book ID
104097523
Publisher
Elsevier Science
Year
2010
Tongue
French
Weight
428 KB
Volume
51
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

PIDA [phenyliodine(III) diacetate] in AcOH or AcOH-HFIP (hexafluoroisopropanol) efficiently promotes the formation of 2,5-disubstituted oxazoles via the oxidative cycloisomerization of propargylamide derivatives.

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Synthesis of oxazoles through Pd-catalyz
Synthesis of oxazoles through Pd-catalyzed cycloisomerizationโ€“allylation of N-propargylamides with allyl carbonates
โœ Akio Saito; Koichi Iimura; Yuji Hanzawa ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 816 KB

In the presence of Pd 2 (dba) 3 -Cy 3 P catalyst, IPrรHCl salt [IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2ylidene], and Cs 2 CO 3 , N-propargylamides react with allyl carbonates to give 2,5-disubstituted oxazoles having homoallyl groups through the tandem cycloisomerization-allylation.

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โœ Akio Saito; Koichi Iimura; Yuji Hanzawa ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› John Wiley and Sons โš– 34 KB ๐Ÿ‘ 1 views

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