期刊
SYNOPEN
卷 7, 期 4, 页码 690-693出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/a-2217-6821
关键词
3-aminohydantoins; alpha-amino esters; hydrazines; isocyanates; cyclization
A new, simple, and efficient method for the synthesis of 3-aminohydantoins was developed, starting from commercially available alpha-amino esters. The method offers a practical and straightforward protocol to obtain the desired compounds in moderate to good yields.
A new, simple, and efficient method for the synthesis of 3-aminohydantoins was reported in two steps, starting from the corresponding l -amino esters. Commercially available alpha-amino esters were converted into the corresponding isocyanate derivatives, which were then subjected to the condensation reaction with hydrazine hydrate and arylhydrazines, in the presence of DMAP and DIPEA. This method provides the corresponding 3-aminohydantoins in moderate and good yields under a simple and practical protocol.
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