11C-labeled C1-C10 partial structure of kulokekahilide-2 (1) was successfully synthesized based on Pd0-mediated rapid C-[11C]methylation using [11C]methyl iodide and pinacol alkenylboronate. The preparation of organob...11C-labeled C1-C10 partial structure of kulokekahilide-2 (1) was successfully synthesized based on Pd0-mediated rapid C-[11C]methylation using [11C]methyl iodide and pinacol alkenylboronate. The preparation of organoboron intermediate via olefin cross-metathesis is also a crucial procedure for the synthesis of 11C-labeling C1-C10 dihy-droxy acid moiety of 1.展开更多
In this paper, the properties of carbon deposited on hexaaluminateLaNiAl_(11)O_(19) catalyst were characterized by X-ray photoelectron spectroscopy (XPS), and in themeantime, the amount of carbon deposited on the cata...In this paper, the properties of carbon deposited on hexaaluminateLaNiAl_(11)O_(19) catalyst were characterized by X-ray photoelectron spectroscopy (XPS), and in themeantime, the amount of carbon deposited on the catalyst, after both CH_4 decomposition and CO_2reforming of CH_4, was determined by means of thermogravimetric analysis (TGA), respectively. Therates of carbon deposited on the catalyst were also investigated and the apparent kinetic equationof CO_2 reforming of CH_4: ν_c = kp^(0.72)(CH_4)·p^(-0.55)(CO_2), was established by analyzing therelation between the rates of deposited carbon and the pressure ratio of CH_4 and CO_2.展开更多
文摘11C-labeled C1-C10 partial structure of kulokekahilide-2 (1) was successfully synthesized based on Pd0-mediated rapid C-[11C]methylation using [11C]methyl iodide and pinacol alkenylboronate. The preparation of organoboron intermediate via olefin cross-metathesis is also a crucial procedure for the synthesis of 11C-labeling C1-C10 dihy-droxy acid moiety of 1.
文摘In this paper, the properties of carbon deposited on hexaaluminateLaNiAl_(11)O_(19) catalyst were characterized by X-ray photoelectron spectroscopy (XPS), and in themeantime, the amount of carbon deposited on the catalyst, after both CH_4 decomposition and CO_2reforming of CH_4, was determined by means of thermogravimetric analysis (TGA), respectively. Therates of carbon deposited on the catalyst were also investigated and the apparent kinetic equationof CO_2 reforming of CH_4: ν_c = kp^(0.72)(CH_4)·p^(-0.55)(CO_2), was established by analyzing therelation between the rates of deposited carbon and the pressure ratio of CH_4 and CO_2.
