A convenient method for the formation of carboxamides from carboxylic acids and primary amines in the presence of molecular sieves is described. This process is very chemoselective.
A facile synthesis of primary amines from carboxylic acids by the curtius rearrangement
β Scribed by Todd L. Capson; C.Dale Poulter
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 197 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Ab4tic.Z . 2-Trimethylsilylethanol was used to trap isocyanates produced by the Curtius rearrangement of acyl azides and the resulting trimethylsilylethyl carbamates were readily cleaved with tetra-n-butylammonium fluoride to liberate the primary amines.
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Anodic oxidation of primary N-tosylamines in methanol containing halide ion qave cl-(N-tosvlamino) aldehvde dimethvl acetals. svntheticallv useful intera-Amino though their ol-tosylamino mediates equiialent to a-amjno aldehybes. . " " aldehydes are versatile intermediates in the synthesis of nitroge
An efficient, high-yield, three-step preparation of 4-0~0 carboxyllc acids from ybutyrolactone via silylatlon and reactlon with a Gngnard reagent is presented. The preparation of 4-0~0 carboxyllc acids 1s of interest since these compounds are, among other things, important precursors to substituted