作者:Peter Meier、Isabelle Adam、David Orain
DOI:10.1055/s-2004-830866
日期:——
Convenient syntheses of 1H-pyrazin-2-ones and 2-aminopyrazines are described. By coupling Boc-protected amino acids with α-amino ketones or with amino alcohols and subsequent oxidation, 1H-pyrazin-2-ones were obtained. Transformation into the corresponding pyrazine triflates and substitution with primary or secondary amines led to 2-aminopyrazines. Since these syntheses take advantage of the use of readily available starting materials (e.g., amino acids, aminoalcohols and amines) a variety of the entitled structures can be obtained in few, high yielding steps.
本文描述了1H-吡嗪-2-酮和2-氨基吡嗪的便捷合成方法。通过将Boc保护的氨基酸与α-氨基酮或氨基醇耦合并随后进行氧化反应,可以得到1H-吡嗪-2-酮。将其转化为相应的三氟甲基磺酸吡嗪并进行一级或二级胺的取代反应,则可得到2-氨基吡嗪。由于这些合成方法利用了易于获得的起始原料(例如氨基酸、氨基醇和胺),因此可以在少数高效步骤中获得各种所需的结构。