22530-98-9Relevant articles and documents
Synthesis method of butyrolactone compound
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Paragraph 0019-0054; 0055, (2020/07/21)
The invention relates to a synthesis method of a butyrolactone compound. The synthesis method comprises the following step: in the presence of a solvent and a cobalt catalyst, converting an oxetane compound shown as general formula I into a butyrolactone compound shown as general formula II through carbonyl insertion ring expansion reaction in an atmosphere of CO and H2. Compared with an existingmethod for synthesizing butyrolactone through oxetane carbonylation ring expansion reaction in a carbon monoxide atmosphere, the synthesis method of a butyrolactone compound provided by the inventionhas the advantages of excellent catalytic activity, excellent chemical selection, wide substrate applicability, mild reaction conditions and the like; compared with other methods for synthesizing butyrolactone compounds, the method provided by the invention has the advantages of wide substrate range, high atom economy, no need of noble metal catalysis and the like, therefore the method has a wideapplication prospect.
Rh-catalyzed intermolecular reactions of cyclic α-diazocarbonyl compounds with selectivity over tertiary C-H bond migration
Deangelis, Andrew,Dmitrenko, Olga,Fox, Joseph M.
supporting information; experimental part, p. 11035 - 11043 (2012/08/28)
Intermolecular Rh-catalyzed reactions of cyclic α-diazocarbonyl compounds with chemoselectivity over β-hydride elimination are described. These methods represent the first general intermolecular reactions of Rh-carbenoids that are selective over tertiary
Regioselective lactonization of unsymmetrical 1,4-diols: An efficient access to lactone lignans
Ito, Masato,Shiibashi, Akira,Ikariya, Takao
supporting information; experimental part, p. 2134 - 2136 (2011/04/21)
A Cp*Ru-based bifunctional catalyst system (Cp* = η5-C5(CH3)5) with a suitably-designed PN ligand (PN = chelating tertiary phosphine-protic amine ligand) has been developed for a regioselective lactonization of