نتایج جستجو برای: thermal rearrangement

تعداد نتایج: 244102  

Journal: :Journal of the American Chemical Society 2002
Jeremy A May Brian M Stoltz

A tandem rhodium-catalyzed Bamford-Stevens/Claisen rearrangement is presented. The tandem reaction uses Eschenmoser hydrazones for the in situ generation of non-carbonyl-stabilized diazo alkanes, which are presumably intercepted by Rh(II) catalysts to induce a 1,2-hydride migration. This sequence provides high levels of stereocontrol for the generation of simple acyclic (Z)-enol ethers. These e...

As the basis and preliminary work of future experimental study on PAHs formation under high temperature, theoretical computations on the intramolecular rearrangement reactions of sylvestrene (1-methyl-3-vinylcyclohexene) and 1,4-dimethyl-4-vinylcyclohexene are conducted and reveal that they may be transformed to themselves. The conversion between Dipentene and 2,4-dimethyl-4-vinylcyclohexen...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم انسانی و اجتماعی 1386

چکیده ندارد.

Journal: :ACS Catalysis 2022

A silver-catalyzed cascade conversion of modular alkyne-1,n-diols and carbon dioxide has been developed allowing for the selective formation keto-functionalized cyclic carbonates. The protocol is characterized by its operational simplicity, excellent scope carbonate-based heterocycles, mild reaction conditions. In situ IR studies, control experiments, detailed computational analysis these manif...

Ahmad Shaabani, Mohsen Ghalamkar Moazzam

Rearrangement of propargyl amine salt, in the presence of a base was studied and it was concluded that this occurs through an allenic intermediate.

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