Lewis acid mediated elimination and rearrangement reactions of α-chlorosulfides derived from phenylthio-substituted 4,5-dihydrofuran-3(2H )-ones.
摘要:
用硫酰氯将苯硫基取代的 4,5-二氢呋喃-3(2H)-酮高度非对映选择性地转化为δ-氯硫化物。用等量的路易斯酸处理这些氯化物后,呋喃-3(2H)-酮产物会发生消除和芳基迁移。δ-乙酰氧基硫化物衍生物也有类似的表现。研究人员还测定了一种具有代表性的δ-氯硫化物和一种新型环亚磺化产物的 X 射线晶体结构。
Lewis acid mediated elimination and rearrangement reactions of α-chlorosulfides derived from phenylthio-substituted 4,5-dihydrofuran-3(2H )-ones.
摘要:
用硫酰氯将苯硫基取代的 4,5-二氢呋喃-3(2H)-酮高度非对映选择性地转化为δ-氯硫化物。用等量的路易斯酸处理这些氯化物后,呋喃-3(2H)-酮产物会发生消除和芳基迁移。δ-乙酰氧基硫化物衍生物也有类似的表现。研究人员还测定了一种具有代表性的δ-氯硫化物和一种新型环亚磺化产物的 X 射线晶体结构。
Switchable Synthesis of <i>Z</i>
-Homoallylic Boronates and <i>E</i>
-Allylic Boronates by Enantioselective Copper-Catalyzed 1,6-Boration
作者:Yunfei Luo、Steven M. Wales、Stamatis E. Korkis、Iain D. Roy、William Lewis、Hon Wai Lam
DOI:10.1002/chem.201801804
日期:2018.6.12
The enantioselective Cu‐catalyzed 1,6‐boration of (E,E)‐α,β,γ,δ‐unsaturated ketones is described, which gives homoallylic boronates with high enantiomeric purity and unexpectedly high Z‐selectivity. By changing the solvent, the outcome can be altered to give E‐allylic boronates.