| Solvent-free reaction of some 1,2-diaza-1,3-butadienes with phosphites: environmentally friendly access to new diazaphospholes and E-hydrazonophosphonates. | |
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MedLine Citation:
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PMID: 15876093 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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[structures: see text] The present article describes the reaction between 1,2-diaza-1,3-butadienes and trialkyl phosphites, under an atmosphere of nitrogen and under solvent-free conditions, to give alkyl 3,3-dialkoxy-2H-1,2,3lambda5-diazaphosphole-4-carboxylates that, in turn, are converted into corresponding E-hydrazonophosphonates by treatment with THF:water (95:5). These latter compounds are obtained directly by the reaction of 1,2-diaza-1,3-butadienes with trialkyl phosphites in the presence of air. These compounds are useful for the further preparation of dialkyl (5-methyl-3-oxo-2,3-dihydro-1H-4-pyrazolyl)phosphonates and 2-dialkoxyphosphoryl-1,2,3-thiadiazoles. |
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Authors:
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Orazio A Attanasi; Graziano Baccolini; Carla Boga; Lucia De Crescentini; Paolino Filippone; Fabio Mantellini |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of organic chemistry Volume: 70 ISSN: 0022-3263 ISO Abbreviation: J. Org. Chem. Publication Date: 2005 May |
Date Detail:
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Created Date: 2005-05-06 Completed Date: 2005-08-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985193R Medline TA: J Org Chem Country: United States |
Other Details:
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Languages: eng Pagination: 4033-7 Citation Subset: - |
Affiliation:
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Istituto di Chimica Organica, Università degli Studi di Urbino Carlo Bo, Via Sasso 75, 61029 Urbino, Italy. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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