30079-93-7Relevant articles and documents
REACTION OF SELENIUM DIOXIDE WITH 3-HYDROXY-1,6-DIOLEFINS. Formation of 8-oxa-3-selenabicyclo1,5>octanes and other selenoorgano compounds
Medarde, Manuel,Lopez, Jose Luis,Morillo, M Angeles,Tome, Fernando,Adeva, Marta,Feliciano, Arturo San
, p. 8097 - 8098 (1995)
The formation of selenium containing products during the reaction of selenium dioxide with hydroxydiolefins has been confirmed through the synthesis and reactivity studies with selected model compounds.The isolation of 8-oxa-3-selenabicyclo1,5>octanes and dimeric selenium compounds has been observed with cyclohexanic and cyclopentanic derivatives.
PROCESS FOR PREPARING PERFUMING INTERMEDIATE
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Page/Page column 40-41, (2021/09/11)
The present invention relates to the field of organic synthesis and more specifically it concerns a process for preparing compound of formula (I) by a cross metathesis reaction. Said compound of formula (I) is valuable new chemical intermediate for producing perfuming ingredients and is also part of the present invention.
Reactivity of Lithium β-Ketocarboxylates: The Role of Lithium Salts
Berton, Mateo,Mello, Rossella,Williard, Paul G.,González-Nú?ez, María Elena
supporting information, p. 17414 - 17420 (2017/12/15)
Lithium β-ketocarboxylates 1(COOLi), prepared by the reaction of lithium enolates 2(Li+) with carbon dioxide, readily undergo decarboxylative disproportionation in THF solution unless in the presence of lithium salts, in which case they are indefinitely stable at room temperature in inert atmosphere. The availability of stable THF solutions of lithium β-ketocarboxylates 1(COOLi) in the absence of carbon dioxide allowed reactions to take place with nitrogen bases and alkyl halides 3 to give α-alkyl ketones 1(R) after acidic hydrolysis. The sequence thus represents the use of carbon dioxide as a removable directing group for the selective monoalkylation of lithium enolates 2(Li+). The roles of lithium salts in preventing the disproportionation of lithium β-ketocarboxylates 1(COOLi) and in determining the course of the reaction with bases and alkyl halides 3 are discussed.
