磺酰基四氢吡喃(THPS)的立体选择性合成6通过与中度至良好的产率进行米-CPBA(米氯过氧酸)介导的闭环β羟基砜5。骨架5是通过在K 2 CO 3存在下将β-酮砜3进行肉桂基化反应,然后在THF和MeOH的共溶剂中用NaBH 4介导的α-肉桂基侧臂还原所得骨架4来制备的。通过X射线晶体学分析证实了骨架6的关键结构。已经讨论了反应机理。
Sodium amalgam mediated desulfonylative reduction of α-functionalized β-ketosulfones
作者:Chieh-Kai Chan、Yi-Hsuan Huang、Meng-Yang Chang
DOI:10.1016/j.tet.2016.07.043
日期:2016.9
Sodiumamalgam mediated desulfonylative reduction of β-ketosulfones in MeOH at rt affords alcohols in good yields via radical desulfonylation of β-ketosulfones and sequential Bouveault-Blanc reduction of the resulting ketones.
m-CPBA-mediated stereoselective synthesis of sulfonyl tetrahydropyrans
作者:Meng-Yang Chang、Yi-Ju Lu、Yu-Chieh Cheng
DOI:10.1016/j.tet.2015.01.016
日期:2015.2
A stereoselective synthesis of sulfonyl tetrahydropyrans (THPs) 6 was performed with moderate to good yields by m-CPBA (m-chloroperoxybenzoic acid)-mediated ring-closure of β-hydroxy sulfones 5. Skeleton 5 is prepared by cinnamylation of β-ketosulfones 3 in the presence of K2CO3 followed by NaBH4-mediated reduction of the resulting skeleton 4 with a α-cinnamyl side arm in the co-solvent of THF and
磺酰基四氢吡喃(THPS)的立体选择性合成6通过与中度至良好的产率进行米-CPBA(米氯过氧酸)介导的闭环β羟基砜5。骨架5是通过在K 2 CO 3存在下将β-酮砜3进行肉桂基化反应,然后在THF和MeOH的共溶剂中用NaBH 4介导的α-肉桂基侧臂还原所得骨架4来制备的。通过X射线晶体学分析证实了骨架6的关键结构。已经讨论了反应机理。