Alkenylation of Heterocycle C—H Catalyzed by CuI Nanoparticles

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Palladium-Catalyzed Alkenylation by the Negishi Coupling

Palladium(II)-catalyzed direct alkenylation of dihydropyranones.

A palladium(II)-catalyzed direct alkenylation reaction of dihydropyranones was developed. Various substituted dihydropyranones could afford the desired products in reasonable yields. And different acrylates were found to be good coupling partners in this coupling reaction. A Pd(0)/Pd(II) catalytic pathway was proposed to be involved in this coupling reaction.

CuI-catalyzed cycloisomerization of propargyl amides.

The synthesis of substituted dihydrooxazoles by the CuI-catalyzed cycloisomerization of terminal propargyl amides is reported. The reaction has been shown to have good substrate scope and experiments to delineate the mechanism have been performed. Substrates containing a benzylic methylene were oxidized to the ketone under the reaction conditions.

Palladium-catalyzed direct C-3 oxidative alkenylation of phosphachromones.

A method for the synthesis of C-3 alkenylated phosphachromones was developed using a direct intermolecular C-3 alkenylation with activated and non-activated alkenes through C-H activation under aerobic conditions.