An efficient and general low-cost method is described to obtain chiral Nβ-Boc protected α-Nα-hydrazino diester building-blocks (orthogonally and non-orthogonally protected diesters) on multi-gram scale (30 mmol) using two successive SN2 reactions. This method is also convenient for the introduction of both polar and nonpolar side chains on the Nα-atom and represents an inexpensive and attractive alternative
描述了一种有效的和一般的低成本方法,以获得手性Ñ β -Boc保护的α - ñ α -
肼基二酯,使用两个连续的S连续克规模(30mmol)的构建模块(正交和非正交保护的二酯)N 2个反应。该方法也便于引入对极性和非极性侧链的Ñ α -原子并且表示相比于使用用于商业氧
氮杂环丙烷的试剂更昂贵的方法廉价且有吸引力的替代Ñ的-amination α -
氨基酸。