[EN] PROCESS FOR THE PREPARATION OF AN alpha-AMINO CARBONYL COMPOUND<br/>[FR] PROCEDE DE PREPARATION D'UN COMPOSE DOLLAR G(A)-AMINO CARBONYLE
申请人:DSM IP ASSETS BV
公开号:WO2004078702A1
公开(公告)日:2004-09-16
The invention relates to a process for the preparation of an α-amino carbonyl compound by reacting an imine starting material with a suitable electrophile in the presence of a base. This process has the advantage that the imine starting materials can be prepared from glyoxylic acid esters or glyoxylic acid ester derivatives and α-hydrogen containing primary amines, which are usually cheap and readily available. These imine starting materials can usually be prepared with a high yield and/or almost without the formation of any side products.
A new method for the preparation of functionalized unnatural α-H-α-amino acid derivatives
作者:David J. Hyett、Mara Didonè、Thierry J.A. Milcent、Quirinus B. Broxterman、Bernard Kaptein
DOI:10.1016/j.tetlet.2006.08.096
日期:2006.10
α-H-α-amino acids is reported based on the α-alkylation of iminoacetic acidesters or amides. These imines are readily available by the reaction of glyoxylic acidesters with branched primary amines. The subsequent reaction with methanolic ammonia gave the corresponding iminoacetic acidamides. α-Alkylation of these imines with various electrophiles under basic conditions, followed by an acidic hydrolysis