133565-43-2Relevant articles and documents
Preparation of Protected Amino Aldehydes
Stanfield, C. Freeman,Parker, James E.,Kanellis, Panayiotis
, p. 4797 - 4798 (1981)
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Hydrodehalogenation of alkyl iodides with base-mediated hydrogenation and catalytic transfer hydrogenation: Application to the asymmetric synthesis of N-protected α-methylamines
Mandal, Pijus K.,Birtwistle, J. Sanderson,McMurray, John S.
, p. 8422 - 8427 (2015/03/18)
We report a very mild synthesis of N-protected α-methylamines from the corresponding amino acids. Carboxyl groups of amino acids are reduced to iodomethyl groups via hydroxymethyl intermediates. Reductive deiodination to methyl groups is achieved by hydrogenation or catalytic transfer hydrogenation under alkaline conditions. Basic hydrodehalogenation is selective for the iodomethyl group over hydrogenolysis-labile protecting groups, such as benzyloxycarbonyl, benzyl ester, benzyl ether, and 9-fluorenyloxymethyl, thus allowing the conversion of virtually any protected amino acid into the corresponding N-protected α-methylamine.
An expedient route for the reduction of carboxylic acids to alcohols employing 1-propanephosphonic acid cyclic anhydride as acid activator
Nagendra,Madhu,Vishwanatha,Sureshbabu, Vommina V.
experimental part, p. 5059 - 5063 (2012/09/22)
A simple and efficient method for the synthesis of alcohols from the corresponding carboxylic acids is described. Activation of carboxylic acid with 1-propane phosphonic acid cyclic anhydride (T3P) and subsequent reduction of the intermediate phosphonic anhydride with NaBH4 yield the alcohol in excellent yields with good purity in less duration. Reduction of several alkyl/aryl carboxylic acids and Nα-protected amino acids/peptide acids as well as Nβ-protected amino acids was successfully carried out to obtain corresponding alcohols in good yields and the products characterized. The procedure is mild, safe, simple and the isolation of the products is easy.
