β-Amino alcohols from anilines and ethylene glycol through heterogeneous Borrowing Hydrogen reaction
作者:Pedro J. Llabres-Campaner、Rafael Ballesteros-Garrido、Rafael Ballesteros、Belén Abarca
DOI:10.1016/j.tet.2017.08.006
日期:2017.9
Borrowing Hydrogen (BH), also called Hydrogen Autotransfer (HA), reaction with neat ethylene glycol represents a key step in the preparation of β-amino alcohols. However, due to the stability of ethylene glycol, mono-activation has rarely been achieved. Herein, a combination of Pd/C and ZnO is reported as heterogeneous catalyst for this BH/HA reaction. This system results in an extremely air and moisture
Disclosed are compounds useful as inhibitors of Phosphodiesterase 1 (PDE1), compositions thereof, and methods of using the same.
揭示了作为磷酸二酯酶1(PDE1)抑制剂有用的化合物,以及它们的组合物和使用方法。
The Acrylamide Moiety as an Activated Alkene Component in the Intramolecular Baylis-Hillman Reaction: Facile Synthesis of Functionalized α-Methylene Lactam and Spirolactam Frameworks
A facile strategy for the intramolecularBaylis–Hillmanreaction by utilizing an acrylamidemoiety as an activatedalkenecomponent was developed, which thus provides a convenient protocol for obtaining five- and six-membered α-methylenelactam and spirolactam derivatives.
Catalytic Enantioselective Synthesis of Morpholinones Enabled by Aza-Benzilic Ester Rearrangement
作者:Yu-Ping He、Hua Wu、Qian Wang、Jieping Zhu
DOI:10.1021/jacs.1c03915
日期:2021.5.19
building block in organic synthesis and a pharmacophore in medicinal chemistry. However, catalytic enantioselective methods for the construction of this N,O-heterocycle remain scarce. We report herein a chiral phosphoric acid-catalyzed enantioselectivesynthesis of C3-substituted morpholinones from aryl/alkylglyoxals and 2-(arylamino)ethan-1-ols. The reaction proceeds through a domino [4 + 2] heteroannulation
Chemoselective<i>O</i>-formyl and<i>O</i>-acyl protection of alkanolamines, phenoxyethanols and alcohols catalyzed by nickel(<scp>ii</scp>) and copper(<scp>ii</scp>)-catalysts
作者:Rahul B. Sonawane、Swapnali R. Sonawane、Nishant K. Rasal、Sangeeta V. Jagtap
DOI:10.1039/d0gc00520g
日期:——
alkanolamines, that have both amines and alcohols as reactive functional groups. Achieving 100% selectivity for O-formyl and O-acyl protection of alkanolamines is one of the examples of such reactions. To avoid protection and deprotection steps and overcome this problem, a novel chemoselective, efficient, and simple protocol for functional group protection as O-formylation and O-acylation of alkanolamines and