نتایج جستجو برای: intermediate product

تعداد نتایج: 404923  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Ken Okamoto Koji Matsumoto Russ Hille Bryan T Eger Emil F Pai Takeshi Nishino

Molybdenum is widely distributed in biology and is usually found as a mononuclear metal center in the active sites of many enzymes catalyzing oxygen atom transfer. The molybdenum hydroxylases are distinct from other biological systems catalyzing hydroxylation reactions in that the oxygen atom incorporated into the product is derived from water rather than molecular oxygen. Here, we present the ...

2016
Denis Pallez Parisa Ghodous Christel Dartigues

The technological advances carried out these last years in the field of products development led the researchers to elaborate approaches that reduce the cost and time of product development, enhance the quality of product and help the designers to be more creative. Currently, computer aided systems have concentrated on the capture and representation of geometrical shape and technical informatio...

Journal: :Journal of the American Chemical Society 2011
Sergiy Levin Roger R Nani Sarah E Reisman

An enantioselective total synthesis of the diterpenoid natural product (+)-salvileucalin B is reported. Key findings include a copper-catalyzed arene cyclopropanation reaction to provide the unusual norcaradiene core and a reversible retro-Claisen rearrangement of a highly functionalized norcaradiene intermediate.

2014
Paul A. Wender Dennis N. Fournogerakis Matthew S. Jeffreys Ryan V. Quiroz Fuyuhiko Inagaki Magnus Pfaffenbach

Multicomponent reactions allow for more bond-forming events per synthetic operation, enabling more step- and time-economical conversion of simple starting materials to complex and thus value-added targets. These processes invariably require that reactivity be relayed from intermediate to intermediate over several mechanistic steps until a termination event produces the final product. Here, we r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ریاضی و کامپیوتر 1389

in this thesis, at first we investigate the bounded inverse theorem on fuzzy normed linear spaces and study the set of all compact operators on these spaces. then we introduce the notions of fuzzy boundedness and investigate a new norm operators and the relationship between continuity and boundedness. and, we show that the space of all fuzzy bounded operators is complete. finally, we define...

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