Reaction of N-acyl-α-methoxyamines with organozinc reagents. A convenient method for the synthesis of homoallylamines and β-amino esters
摘要:
The reaction of N-acyl-alpha-methoxyamines with allyl-, propargyl-, and benzylzinc bromides and Reformatsky reagents proceeds in THF at room temperature. Homoallyl- and homopropargylamines and beta-amino esters are synthesized in good yields.
A New Method for the Synthesis of β-Amino Acid Derivatives and β-Lactams. Reaction of <i>N</i>-Alkoxycarbonyl-1-methoxyamines with Esters
作者:Naoki Kise、Nasuo Ueda
DOI:10.1021/jo990821q
日期:1999.10.1
The reaction of N-alkoxycarbonyl-1-methoxyamines with esters is an alternative to the reaction of imines with esters for the synthesis of beta-amino acid derivatives. In this reaction, N-alkoxycarbony-1-methoxyamines corresponding to unstable imines can also be employed. Although anti adducts were obtained preferentially in the absence of Ti complexes, the diastereoselectivity of this reaction was reversed by the addition of Ti(OPr-i)(4). The obtained adducts were transformed to the corresponding beta-lactams.