Monosubstituted guanidines from primary amines and aminoiminomethanesulfonic acid
β Scribed by Keekyung Kim; Yi-Tsong Lin; Harry S Mosher
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- French
- Weight
- 256 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
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.
## Abstract A new synthesis of trimers of aliphatic monosubstituted ketenes from acid chlorides is described. The structures of the products are shown to be alkyl substituted Ξ³βhydroxyβΞ±βpyrones by NMR. and mass spectroscopy. ^13^CβNMR. studies indicate, that an acetanilide/aluminiumβchloride compl
A new reagent --4-nitro-l-H-pyrazole-l-[N, N'-bis(ten-butoxycarbonyl)]cmboxamidine --has been develolxd to effect the rapid a~l efficient synthesis of I~(~)-pmtected guanidin~ from and secendm3, amines. The reagent is a more eleclrophilic, sad comfy more derivative of the literature reagent l-H-pyra