An exceptionally stereoselective and general synthesis of (Z)-α-haloacrylates, ready to undergo various synthetic transformations, has been demonstrated from α-haloacetates and aldehydes in a one-pot manner via the titanium-enolate based asymmetric aldol condensation. Besides being an expedient synthetic procedure, the ready availability of diverse α-haloacetates, exceptional stereoselectivity, and high yields make the process a versatile transformation in organic synthesis. The potential of this method in up-scaling operations has been illustrated.
展示了一种异常立体选择性和通用性合成(Z)-α-卤代
丙烯酸酯的方法,该方法通过
钛烯醇基催化的不对称 aldol 凝缩反应,采用 α-卤代
乙酸酯和醛以一步法进行合成。这种合成方法不仅便捷,而且多样的 α-卤代
乙酸酯的可得性、出色的立体选择性和高产率使得该过程在有机合成中具有多功能性。该方法在放大操作中的潜力也得到了展示。