已经开发了在光氧化还原催化下具有易于获得的C 6 F 5 I(OCOCF 3)2的可扩展且操作简单的(杂)芳烃的脱羧三氟甲基化。该方法可耐受各种(杂)芳烃和官能团。值得注意的是,C 6 F 5 I从脱羧反应中再循环并进一步用于制备C 6 F 5 I(OCOCF 3)2。光氧化还原催化和高价碘试剂的结合为三氟乙酸在三氟甲基化反应中的应用提供了一种实用的方法。
A facile one-pot preparation of 2-methyl-and 2-phenyl-4- fluoro-5-trifluoromethyl-6-methoxypyrimidine from methyl 2-hydryl-2-(-methyl)--propyl ether
作者:Yoshio Inouye、Yoichi Higuchi
DOI:10.1016/s0022-1139(00)84991-x
日期:1985.2
The title compounds were readily prepared in one-pot by phase-transfer reaction of a methanol adduct of 2-(-methyl)-- propene with acetamidine or benzamidine in the presence of aqueous sodium hydroxide in CH2Cl2. Various 5-trifluoromethyl- pyrimidines were also synthesized nucleophilicsubstitution of the 4-fluorine of the title compounds.