Large-Scale Green Chemical Synthesis of Adjacent Quaternary Chiral Centers by Continuous Flow Photodecarbonylation of Aqueous Suspensions of Nanocrystalline Ketones
作者:María Guadalupe Hernández-Linares、Gabriel Guerrero-Luna、Salvador Pérez-Estrada、Martha Ellison、Maria-Mar Ortin、Miguel A. Garcia-Garibay
DOI:10.1021/ja512524j
日期:2015.2.4
4-diphenyl-3-pentanone 1. We demonstrate that solid state photodecarbonylation of (+)-(2R,4S)-1 affords (+)-(2R,3R)-2-carbomethoxy-3-cyano-2,3-diphenyl-butane 2 with two adjacent stereogenic, all-carbon substituted quaternary centers, in quantitative chemical yield and 100% diastereoselectivity and enantiomeric excess. The efficient multigram photodecarbonylation of (+)-(2R,4S)-1 as a nanocrystalline suspension
为了证明一些有机固态反应的放大和合成潜力,我们报告了无环、同手性、六取代的 (+)-(2R,4S)-2-carbomethoxy-4 的合成、结晶和固态光化学-cyano-2,4-diphenyl-3-pentanone 1. 我们证明 (+)-(2R,4S)-1 的固态光脱羰得到 (+)-(2R,3R)-2-carbomethoxy-3-cyano -2,3-二苯基丁烷 2 具有两个相邻的立体异构、全碳取代的四元中心,具有定量化学产率和 100% 非对映选择性和对映体过量。(+)-(2R,