862972-85-8Relevant academic research and scientific papers
Rhodium(i)-catalyzed Pauson-Khand-type reaction using formic acid as a CO surrogate: An alternative approach for indirect CO2 utilization
Lang, Xian-Dong,You, Fei,He, Xing,Yu, Yi-Chen,He, Liang-Nian
, p. 509 - 514 (2019/02/14)
Formic acid is found to be an ideal CO surrogate for the rhodium(i)-catalyzed Pauson-Khand-type (PK-type) reaction of various substituted 1,6-enynes to afford bicyclic cyclopentenones in moderate to good yields. High TON value of up to 263 and good results in the gram-scale experiment were also obtained, demonstrating the efficacy of this methodology. In addition, heterocyclic molecules of pharmaceutical importance were also furnished via inter- or intra-molecular hetero-PK-type reactions, further broadening the application of current strategy. In this protocol, formic acid was utilized as a bridging molecule for the conversion of CO2 to CO, since formic acid is manufactured via catalytic hydrogenation of CO2 and releases CO in the presence of acetic anhydride readily. Therefore, this methodology represents a green and indirect approach for chemical valorization of CO2 in the preparation of value-added compounds.
Microwave-assisted rhodium-complex-catalyzed cascade decarbonylation and asymmetric Pauson-Khand-type cyclizations
Hang, Wai Lee,Lai, Na Lee,Chan, Albert S. C.,Fuk, Yee Kwong
supporting information; experimental part, p. 3403 - 3406 (2009/04/07)
Microwave-assisted Rh-diphosphane-complex-catalyzed dual catalysis is reported. This cooperative process provides [2+2+1] cycloadducts by sequential decarbonylation of aldehyde or formate and carbonylation of enynes within a short period of time. Various
Formate as a CO surrogate for cascade processes: Rh-catalyzed cooperative decarbonylation and asymmetric Pauson-Khand-type cyclization reactions
Lee, Hang Wai,Chan, Albert S. C.,Kwong, Fuk Yee
, p. 2633 - 2635 (2008/02/08)
A rhodium-(S)-xyl-BINAP complex-catalyzed tandem formate decarbonylation and [2 + 2 + 1] carbonylative cyclization is described; this cooperative process utilizes formate as a condensed CO source, and the newly developed cascade protocol can be extended t
Rhodium-catalyzed asymmetric aqueous Pauson-Khand-type reaction
Kwong, Fuk Yee,Li, Yue Ming,Lam, Wai Har,Qiu, Liqin,Lee, Hang Wai,Yeung, Chi Hung,Chan, Kin Shing,Chan, Albert S. C.
, p. 3872 - 3880 (2007/10/03)
An interesting rhodium-catalyzed asymmetric aqueous Pauson-Khand-type reaction was developed. A chiral atropisomeric dipyridyldiphosphane ligand was found to be highly effective in this system. This operationally simple protocol allows both catalyst and r
