Carboxylation with CO<sub>2</sub> via Brook Rearrangement: Preparation of α-Hydroxy Acid Derivatives
作者:Tsuyoshi Mita、Yuki Higuchi、Yoshihiro Sato
DOI:10.1021/ol403099f
日期:2014.1.3
rearrangement. A variety of α-substituents including aryl, alkenyl, and alkyl groups were tolerated to afford α-hydroxy acids in moderate-to-high yields. One-pot synthesis from aldehydes using PhMe2SiLi and CO2 was also possible, providing α-hydroxy acids without the isolation of an α-hydroxy silane.
在CsF的存在下,通过布鲁克重排在CO 2气氛(1atm)下将多种α-取代的α-甲硅烷氧基硅烷羧化。可以耐受包括芳基,烯基和烷基在内的各种α-取代基,以中等至高收率得到α-羟基酸。也可以使用PhMe 2 SiLi和CO 2从醛进行一锅法合成,无需分离α-羟基硅烷即可提供α-羟基酸。