反应详情

Solutions were prepared by dissolving all of the following in a total volume of 5 mL methanol and 2-propanol, respectively: (a) 60.0 mg 1,2-dibromodecane, 10.8 mg of benzophenone and 12.6 mg of dodecane; (b) 65.2 mg 1,2-dibromodecane, 11.2 mg benzophenone and 11.2 mg dodecane. Two 2mL-aliquot of each solution were placed in quartz cells (7×7 mm2) and deaerated by bubbling oxygen-free nitrogen for 15 minutes. Samples were then irradiated at 350 nm using a photoreactor equipped with two RPR-350 lamps. Samples were rotated with a "merry-go-round" (to ensure that all samples received the same irradiation dose) and irradiated for 1 hour (methanol) or 40 minutes (2-propanol). A valerophenone solution (prepared as described above) was used as a relative actinometer. Product (i.e. 1-decene) quantification and quantum yields were carried out as described above. Results are summarized in the table below. No 1-decene was formed in the absence of benzophenone.

1. customSolutions were prepared
2. customby bubbling oxygen-free nitrogen for 15 minutes
3. customSamples were then irradiated at 350 nm
4. customequipped with two RPR-350 lamps
5. customirradiated for 1 hour (methanol) or 40 minutes (2-propanol)