TsCl promoted deoxygenative phosphorothiolation of quinoline -oxides towards -quinolyl phosphorothioates.

A convenient, efficient and practical approach for the synthesis of -quinolyl phosphorothioates cheap TsCl promoted deoxygenative C2-H phosphorothiolation of quinoline -oxides with readily available triethylammonium ,-dialkylphosphorothioates was developed. The reaction performed well under transition-metal-free conditions at room temperature with a very short reaction time (10-20 min). Preliminary studies showed that the current transformation underwent a nucleophilic substitution process.

[Assessment on ecological integrity of typical lakes, reservoirs and wetlands in Tianjin, China].

The ecological health assessment of lakes, reservoirs and wetlands can provide decision-making basis for ecosystem restoration and management. We selected 20 typical lakes, reservoirs and wetlands sampling points in Tianjin, based on physical, chemical, and biological community indicators data (zooplankton, phytoplankton, benthos, fish, large aquatic plants, riparian plants) obtained during the survey from August to September 2018. We constructed an index of ecological integrity (IEI) including physical integrity, chemical integrity, and biological integrity to evaluate their ecological health.