14119-99-4Relevant articles and documents
Synthesis and structures of stable phosphorus zwitterions derived from mesoionic 4-trifluoroacetyl-1,3-oxazolium-5-olates
Saijo, Ryosuke,Uno, Hidemitsu,Mori, Shigeki,Kawase, Masami
supporting information, p. 8006 - 8009 (2016/07/06)
Trialkyl phosphites were evaluated as phosphorus nucleophiles for addition to mesoionic 4-trifluoroacetyl-1,3-oxazolium-5-olates (1), thereby producing tetravalent phosphorus zwitterions (2) in good yields. The structure of 2 was determined to be a tetrav
Synthesis and Cycloaddition Reactions of Stabilized Münchnones
Kakaawla, Taban K. K.,Hartley, Will C.,Harrity, Joseph P. A.
supporting information, p. 2789 - 2792 (2016/07/07)
A family of stabilized münchnones bearing an acyl group at C4 have been prepared and studied in alkyne cycloaddition reactions. These reactions are highly regioselective, and the method represents a rapid and straightforward route to densely substituted pyrroles. Finally, the C4-stabilizing units can be further manipulated to furnish carboxylic acid and amide groups, or removed altogether to provide unsubstituted pyrroles.
New synthesis of 3-trifluoromethylpyrroles by condensation of mesoionic 4-trifluoroacetyl-1,3-oxazolium-5-olates with phosphorus ylides
Saijo, Ryosuke,Hagimoto, Yuri,Kawase, Masami
supporting information; experimental part, p. 4776 - 4779 (2011/01/03)
Mesoionic 4-trifluoroacetyl-1,3-oxazolium-5-olates (1), obtained from the reaction of N-acyl-N-alkylglycines with trifluoroacetic anhydride, react with phosphorus ylides to give β-trifluoromethylpyrroles (2) in good yields. The novel ring transformations