99321-88-7Relevant academic research and scientific papers
Palladium nano-particles as a recyclable catalyst for C-O bond formation under solvent free conditions
Khan, Ajmal,Zhang, Junjie,Khan, Shahid
, p. 4116 - 4120 (2020)
The development of green, economical and sustainable chemical processes is one of the primary challenges in organic chemistry. Herein, we report a recoverable heterogeneous palladium catalyst for the stereoselective synthesis of multi-functionalized allylic ethers under solvent free conditions. This method is based on in situ generated PdNP catalyzed O-allylation of alcohols with vinyl cyclic carbonates. Solvent-free conditions, easily recoverable catalysts, efficient recycling, and operational simplicity make the protocol green, economic and sustainable.
Ligand-Free Pd-Catalyzed Synthesis of 3-Allylbenzofurans by Merging Decarboxylative Allylation and Nucleophilic Cyclization
Zhang, Jie,Wang, Jia-Yin,Huang, Min-Hua,Hao, Wen-Juan,Tu, Xing-Chao,Tu, Shu-Jiang,Jiang, Bo
, p. 7036 - 7044 (2020/07/03)
A new single Pd-catalyzed decarboxylative allylation-nucleophilic cyclization relay is reported by using α-alkynyl arylols and vinylethylene carbonates (or vinyl carbamates), and a wide range of 3-allyl benzofurans with generally good yields were stereoselectively synthesized under mild conditions, among which the complete stereoselectivity of some cases was also observed. Notably, the present catalysts can tolerate air conditions without any ligand, additive, or base, opening new avenues to build up oxa-heterocycle frameworks through catalytic difunctionalization of internal alkynes.
Pd-Catalyzed Enantio- and Regioselective Formation of Allylic Aryl Ethers
Xie, Jianing,Guo, Wusheng,Cai, Aijie,Escudero-Adán, Eduardo C.,Kleij, Arjan W.
supporting information, p. 6388 - 6391 (2017/12/08)
A general methodology for the synthesis of enantioenriched tertiary allylic aryl ethers through Pd-catalyzed decarboxylative reactions of vinyl cyclic carbonates and phenols is presented. Switching of the regioselectivity toward the formation of linear products by a judicious choice of the ligand is also reported.
Epoxydes α-ethyleniques et phenate de sodium: acces a des ethers phenoliques et phenols ortho-allyliques
David, Michele,Sauleau, Jean,Sauleau, Armelle
, p. 2449 - 2454 (2007/10/02)
The ring cleavage reactions of α-ethylenic epoxides by sodium phenoxide afforded a mixture of products.Problems of competitive attack by this nucleophile, at the less substituted carbon (compounds A) or at the β-ethylenic carbon atom (compounds B and C), were encountered and could be resolved by judicious choice of reaction conditions (solvents, stereochemistry of the oxiranes).The regioselectivity of the attack was dependent on the transition states, implying weak steric hindrance and a conjugation oxirane - double bond.
