Construction of All‐Carbon Chiral Quaternary Centers through Cu
<sup>I</sup>
‐Catalyzed Enantioselective Reductive Hydroxymethylation of 1,1‐Disubstituted Allenes with CO
<sub>2</sub>
作者:Jia Qiu、Shen Gao、Chaopeng Li、Lei Zhang、Zheng Wang、Xiaoming Wang、Kuiling Ding
DOI:10.1002/chem.201903906
日期:2019.11.4
construction of all-carbon chiral quaternary centers through reductive hydroxymethylation of 1,1-disubstituted allenes with CO2 has been developed. In the presence of a copper/Mandyphos catalyst, CO2 is transformed into an alcohol oxidation level by an asymmetric reductive C-C bond formation with allenes by using hydrosilane (HSi(OMe)2 Me) as a reductant. The resulting chiral homoallylic alcohols are
通过1,1-二取代的丙二烯与CO 2的还原羟甲基化反应,开发了全碳手性季中心的催化对映选择性结构。在铜/ Mandyphos催化剂的存在下,通过使用氢化硅烷(HSi(OMe)2 Me)作为还原剂,通过与丙二烯的不对称还原CC键形成,将CO2转化为醇氧化能级。所得手性均烯丙基醇是通用的合成中间体,可以方便地转化为多种有用的手性化学品。