828267-45-4Relevant articles and documents
Rh-Catalyzed Annulation of Benzoic Acids, Formaldehyde, and Malonates via ortho-Hydroarylation to Indanones
Yu, Shuling,Lv, Ningning,Hong, Chao,Liu, Zhanxiang,Zhang, Yuhong
supporting information, p. 8354 - 8358 (2020/11/18)
A three-component reaction from readily available low-cost materials of benzoic acids, formaldehyde, and malonates for the preparation of indanones by rhodium catalysis is reported. The annulation is initiated by an ortho-hydroarylation of benzoic acids, and a Lewis acid is not required. The solvent has a significant influence to the reaction, and 2-substituted or nonsubstituted indanones are obtained by the change of solvent.
CYCLIC AMINE DERIVATIVE OR SALT THEREOF
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Page/Page column 23; 44, (2010/11/27)
Provided are compounds which are an NMDA antagonist having a broad safety margin and are useful as a treating agent or a preventing agent for Alzheimer's disease, cerebrovascular dementia, Parkinson's disease, ischemic apoplexy, pain, etc. Concretely prov
Microwave-enhanced carbonylative generation of indanones and 3-acylaminoindanones
Wu, Xiongyu,Nilsson, Peter,Larhed, Mats
, p. 346 - 349 (2007/10/03)
(Chemical Equation Presented). The development of microwave-accelerated protocols for palladium(0)-catalyzed carbonylative cyclization of unsaturated aryl bromides and chlorides is described. By employing o-bromostyryl derivatives lacking substituents on the vinylic bond, molybdenum hexacarbonyl-mediated in situ carbonylation delivered a set of indan-1-one products in high yield after only 20 min of heating. Without the addition of the tri-tert-butylphosphine releasing Fu-salt ((t-Bu)3PHBF4), only incomplete conversions of sluggish o-styryl bromides and chlorides were realized. Internal and chemoselective palladium(0)-catalyzed Heck arylations of enamides afforded suitable starting materials for subsequent rapid ring-closing reactions. Microwave-heated intramolecular in situ carbonylation of these electron-rich and sterically congested olefins conveniently afforded eight functionalized 3-acylaminoindanone derivatives in a novel synthetic process. Attempted carbonylative annulation of electron-poor o-bromocinnamic acid derivatives furnished only the corresponding lactones via a competing hydroxycarbonylation- Michael addition reaction sequence.