A Diels–Alder approach to the enantioselective construction of fluoromethylated stereogenic carbon centers
作者:Kazutaka Shibatomi、Fumito Kobayashi、Akira Narayama、Ikuhide Fujisawa、Seiji Iwasa
DOI:10.1039/c1cc15889a
日期:——
Highly enantioselective Diels-Alder reactions of beta-fluoromethylacrylates were carried out in the presence of a Lewis acid activated chiral oxazaborolidine catalyst. These reactions yielded fluoromethylated cyclohexenes, including trifluoromethyl-, difluoromethyl-, and monofluoromethyl cyclohexenes, as nearly pure enantiomers. The resulting fluoromethyl cyclohexenes were converted into potential
β-氟甲基丙烯酸酯的高度对映选择性Diels-Alder反应在路易斯酸活化的手性恶唑硼烷催化剂的存在下进行。这些反应产生了氟甲基化的环己烯,包括三氟甲基-,二氟甲基-和一氟甲基环己烯,为几乎纯的对映异构体。将所得的氟甲基环己烯转化为生物活性化合物的潜在合成中间体。