catalytic asymmetric ene reaction with difluoropyruvate as an electrophile in the presence of a dicationic palladium complex is shown. This is the reliable and practical catalytic asymmetric synthesis for various α-CF2H tertiary alcohols in high yields and enantioselectivities. The reaction with isobutene can be catalyzed efficiently under solvent-free conditions with lowcatalystloading (up to S/C 2000)
显示了在阳离子型钯络合物存在下,以二氟丙酮酸酯为亲电体的催化不对称烯反应。这是可靠和实用催化不对称合成各种α-CF 2以高产率和对映选择性ħ叔醇。与异丁烯的反应可以在无溶剂条件下以较低的催化剂负载量(高达S / C 2000)有效地进行催化。此外,二氟丙酮酸盐可高产率和对映选择性地用于[2 + 2]环加成反应。