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Tropolone
Tropolone is an organic compound with the chemical formula . It is a pale yellow solid that is soluble in organic solvents. The compound has been of interest to research chemists because of its unusual electronic structure and its role as a ligand precursor. Although not usually prepared from tropone, it can be viewed as its derivative with a hydroxyl group in the 2-position. Synthesis and reactions Many methods have been described for the synthesis of tropolone. One involves bromination of 1,2-cycloheptanedione with ''N''-bromosuccinimide followed by dehydrohalogenation at elevated temperatures, while another uses acyloin condensation of the ethyl ester of pimelic acid the acyloin again followed by oxidation by bromine. : An alternate route is a +2cycloaddition of cyclopentadiene with a ketene to give a bicyclo .2.0eptyl structure, followed by hydrolysis and breakage of the fusion bond to give the single ring: : Thy hydroxyl group of tropolone is acidic, having a p''K'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Talaromyces Stipitatus
''Talaromyces'' is a genus of fungi in the family Trichocomaceae. Described in 1955 by American mycologist Chester Ray Benjamin, species in the genus form soft, cottony fruit bodies ( ascocarps) with cell walls made of tightly interwoven hyphae. The fruit bodies are often yellowish or are surrounded by yellowish granules. A 2008 estimate placed 42 species in the genus, but several new species have since been described. This genus contains the teleomorph of ''Penicillium ''Penicillium'' () is a genus of ascomycetous fungi that is part of the mycobiome of many species and is of major importance in the natural environment, in food spoilage, and in food and drug production. Some members of the genus produce pe ...''. Species *'' T. albobiverticillius'' *'' T. amestolkiae'' *'' T. apiculatus'' *'' T. assiutensis'' *'' T. atroroseus'' *'' T. aurantiacus'' *'' T. austrocalifornicus'' *'' T. bacillisporus'' *'' T. barcinensis'' *'' T. boninensis'' *'' T. brunneus'' *'' T. c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
