In 2017,both the planting area and yield of the citrus in Hunan Province increased,but some production areas suffered decline in yield due to abnormal climate. The sales price of citrus in the whole province increased...In 2017,both the planting area and yield of the citrus in Hunan Province increased,but some production areas suffered decline in yield due to abnormal climate. The sales price of citrus in the whole province increased compared with the previous year,and the sales progress was faster than the previous year. Due to the much increase of planting costs,the income of citrus growers declined. Therefore,it is recommended to promote the development of citrus industry in Hunan Province through strengthening the overall planning of the industry,consolidating the seed base,developing primary processing and deep processing,and enhancing brand building.展开更多
3-Aryl-l,2,4-benzotriazines were conveniently prepared in moderate to good yields from 1,1-bis（benzotriazol-1- yl）methylarenes with allylsamarium bromide/hexamethylphosphramide （allylSmBr/HMPA）. Preliminary result...3-Aryl-l,2,4-benzotriazines were conveniently prepared in moderate to good yields from 1,1-bis（benzotriazol-1- yl）methylarenes with allylsamarium bromide/hexamethylphosphramide （allylSmBr/HMPA）. Preliminary results in- dicate that HMPA may enhance the reducing ability as well as prohibit the nucleophicility of allylSmBr, thus mak- ing allylSmBr/HMPA as a promising single-electron transfer （SET） reagent.展开更多
文摘In 2017,both the planting area and yield of the citrus in Hunan Province increased,but some production areas suffered decline in yield due to abnormal climate. The sales price of citrus in the whole province increased compared with the previous year,and the sales progress was faster than the previous year. Due to the much increase of planting costs,the income of citrus growers declined. Therefore,it is recommended to promote the development of citrus industry in Hunan Province through strengthening the overall planning of the industry,consolidating the seed base,developing primary processing and deep processing,and enhancing brand building.
基金Acknowledgement This work was financially supported by National Natural Science Foundation of China （No. 20802070） and the research foundation from Key Laboratory of Synthetic Organic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry （CAS）. We thank Professor Ran Hong at SIOC for helpful discus- sions.
文摘3-Aryl-l,2,4-benzotriazines were conveniently prepared in moderate to good yields from 1,1-bis（benzotriazol-1- yl）methylarenes with allylsamarium bromide/hexamethylphosphramide （allylSmBr/HMPA）. Preliminary results in- dicate that HMPA may enhance the reducing ability as well as prohibit the nucleophicility of allylSmBr, thus mak- ing allylSmBr/HMPA as a promising single-electron transfer （SET） reagent.
