نتایج جستجو برای: pyrazoles

تعداد نتایج: 607  

Journal: :Angewandte Chemie 2017
Joshua Britton Timothy F Jamison

A rapid and modular continuous flow synthesis of highly functionalized fluorinated pyrazoles and pyrazolines has been developed. Flowing fluorinated amines through sequential reactor coils mediates diazoalkane formation and [3+2] cycloaddition to generate more than 30 azoles in a telescoped fashion. Pyrazole cores are then sequentially modified through additional reactor modules performing N-al...

Journal: :Acta Crystallographica Section A Foundations and Advances 2018

Journal: :Accounts of chemical research 2002
Frieder W Lichtenthaler

With reference to the impending transition of chemical industry from depleting fossil raw materials to renewable feedstocks--the end of cheap oil is predicted for 2040 at the latest--this account gives an overview on chemically transforming carbohydrates, by far the major part of the annually regrowing biomass, into the following unsaturated O- and N-heterocycles with versatile industrial appli...

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