218966-35-9Relevant academic research and scientific papers
Rhodium-bisbenzodioxanphos complex-catalyzed homogeneous enantioselective Pauson-Khand-type cyclization in alcoholic solvents
Fuk, Yee Kwong,Hang, Wai Lee,Qiu, Liqin,Wai, Har Lam,Li, Yue-Ming,Hoi, Lun Kwong,Chan, Albert S. C.
, p. 1750 - 1754 (2005)
The chiral atropisomeric diphosphane ligand (S)-BisbenzodioxanPhos was found to be highly effective in the co-operative processeses of aldehyde decarbonylation and cascaded enantioselective Pauson-Khand-type reactions. Various 1,6-enynes were transformed
SeO2-Mediated Oxidative Transposition of Pauson-Khand Products
Dibrell, Sara E.,Maser, Michael R.,Reisman, Sarah E.
supporting information, p. 6483 - 6487 (2020/04/30)
Oxidative transpositions of bicyclic cyclopentenones mediated by selenium dioxide (SeO2) are disclosed. Treatment of Pauson-Khand reaction (PKR) products with SeO2 in the presence or absence of water furnishes di- and trioxidized cyclopentenones, respectively. Mechanistic investigations reveal multiple competing oxidation pathways that depend on substrate identity and water concentration. Functionalization of the oxidized products via cross-coupling methods demonstrates their synthetic utility. These transformations allow rapid access to oxidatively transposed cyclopentenones from simple PKR products.
Copper(II) bromide catalyzed novel preparation of propargylic ethers and sulfides by SN1-type substitution between propargylic alcohols and alcohols or thiols
Hui, Hao-Hao,Zhao, Qin,Yang, Ming-Yu,She, De-Bing,Chen, Min,Huang, Guo-Sheng
, p. 191 - 196 (2008/12/20)
A general and efficient copper(II) bromide catalyzed substitution reaction of propargylic alcohols with carbon and heteroatom-centered nucleophiles, such as alcohols and thiols, leading to the construction of C-O and C-S bonds has been developed. High pro
Bicyclization of enynes using the Cp2TiCl2-Mg-BTC system: A practical method to bicyclic cyclopentenones
Zhao, Zongbao,Ding, Yu,Zhao, Gang
, p. 9285 - 9291 (2007/10/03)
Bicyclic titanacycles 2 generated with the Cp2TiCl2-Mg-P(OEt)3 system can be trapped with bis(trichloromethyl) carbonate (BTC) to give bicyclic cyclopentenones 3 in good yields. The titanacycle 2m was isolated and well- identified. Bicyclization of enynes containing 1,2-disubstituted olefin by this method gave good results with excellent stereoselectivity.
