نتایج جستجو برای: cascade reaction
تعداد نتایج: 454248 فیلتر نتایج به سال:
•Novel SNAr reactivity discovered with ortho-fluorinated diaryliodonium salts•Efficient diarylation of water, ammonia, primary amines, and anilines•Convenient simple route to triarylamines three different aryl groups•The products are easily derivatized through the retained iodide substituent Diaryl ethers, diarylamines, key structural motives in natural products, pharmaceuticals, material chemi...
Acyl transfer-enabled catalytic asymmetric Michael addition of α-hydroxy-1-indanones to nitroolefins
We report herein an enantioselective acyl transfer protocol via electrophile activation. The reaction cascade sequence encompasses dinuclear zinc-catalyzed asymmetric Michael addition, intramolecular cyclization, and retro-Claisen reaction, which leads to a step- atom-economic approach variety of protected cyclic tertiary α-hydroxyketones in good yields with excellent enantioselectivities (24 e...
چکیده در این پایان¬نامه ما ابتدا به معرفی و شناخت سیستم¬های uwbدر تکنولوژی cmosپرداخته و از آنجایی که نویز در این سیستم¬ها بسیار مهم است، به تکنیک¬های مورد استفاده برای بهینه¬سازی نویز می¬پردازیم. در ادامه به مرور چند ساختار تقویت-کننده کم نویز که به ترتیب شامل تقویت¬کننده distributed، تقویت¬کننده cascade، تقویت¬کننده سورس-مشترک با سلف دیژنراسیون،تقویت¬کننده cascade با تکنیک اینورتر با فیدبک م...
Photothermal-Gas Synergistic Cancer Therapy In article number 2206749, Benhui Hu, Yun Liu, and co-workers propose a cascade reaction-promoted CO release strategy to realize augmented photothermal-gas synergistic cancer therapy. Gold-based porphyrinic coordination polymer nanosheets synthesized by simple aqueous phase reaction, with ultrasmall zero-valent gold as the node, have advantages of hig...
A nicotinamide adenine dinucleotide (NADH)-dependent redox-neutral convergent cascade composed of a recently discovered type II flavin-containing monooxygenase (FMO E) and horse liver alcohol dehydrogenase (HLADH) has been established. Two model reaction cascades were analyzed for the synthesis of g-butyrolactone and chiral bicyclic lactones. In the former cascade, all substrates were converted...
The conversion of carbon dioxide into important industrial feedstock is a subject of growing interest in modern society. A possible way to achieve this goal is by carrying out the CO2/methanol cascade reaction, allowing the recycle of CO2 using either chemical catalysts or enzymes. Efficient and selective reactions can be performed by enzymes; however, due to their low stability, immobilization...
Enzyme-free signal amplification has enabled sensitive in vitro detection of biomolecules such as proteins and nucleic acids. However, monitoring targets of interest in live cells via enzyme-free amplification is still challenging, especially for analytes with low concentrations. To the best of our knowledge, this paper reports the first attempt to perform mRNA imaging inside live cells, using ...
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