Results 131 to 140 of about 5,801 (188)
Some of the next articles are maybe not open access.
Monosubstituted Oxazoles. 1. Synthesis of 5-Substituted Oxazoles by Directed Alkylation
The Journal of Organic Chemistry, 1998A general method is presented for synthesis of 2-(methylthio)-5-substituted oxazoles 2. Deprotonation of the readily available 2-(methylthio)oxazole (1) with n-BuLi occurs smoothly in the presence of TMEDA and regiospecifically at C5. The organometallic 1a added rapidly to aldehydes and other electrophiles to provide 5-substituted-2-(methylthio ...
Cynthia M., Shafer, Tadeusz F., Molinski
openaire +2 more sources
Tetrahedron, 1994
Abstract Oxazole-4-sulfones, -phosphonates, and -nitriles are prepared by rhodium(II) catalysed addition of nitriles to the corresponding diazo compound. The effect of the ligand on rhodium was briefly investigated, with rhodium(II) trifluoroacetamide generally proving the most effective catalyst.
Kevin J. Doyle, Christopher J. Moody
openaire +1 more source
Abstract Oxazole-4-sulfones, -phosphonates, and -nitriles are prepared by rhodium(II) catalysed addition of nitriles to the corresponding diazo compound. The effect of the ligand on rhodium was briefly investigated, with rhodium(II) trifluoroacetamide generally proving the most effective catalyst.
Kevin J. Doyle, Christopher J. Moody
openaire +1 more source
Synthetic approaches for oxazole derivatives: A review
Synthetic Communications, 2021Faraat Ali, , Kashif Haider
exaly