Suchergebnisse

Background: Ambient air quality monitoring is a governmental duty that is widely carried out in order to detect non-biological ("chemical") components in ambient air, such as particles of 500). The prevalent monitoring method is based on the Hirst principle (> 600 stations). The inventory is visualised as an interactive and on-line map. It can be searched, its appearance can be adjusted to the users' needs and it is updated regularly, as new stations or changes to those that already exist can be submitted online. Conclusions: The map shows the current situation of pollen and spore monitoring and facilitates collaboration among those individuals who are interested in pollen and spore counts. It might also help to improve the monitoring of biological particles up to the current level employed for non-biological components.

[EN] A highly enantioselective Strecker reaction with dibenzo[b,f][1,4]oxazepines has been described using a dihydroquinine-derived thiourea as organocatalyst. The reaction affords chiral 10,11-dihydrodibenzo[b,f][1,4] oxazepine 11-carbonitrile derivatives in excellent yields (up to 99%) and excellent enantioselectivities (up to 98%) under mild reaction conditions. ; Financial support from the Agencia Estatal de Investigacion (Spanish Government) and Fondo Europeo de Desarrollo Regional (FEDER, European Union) (CTQ2017-84900-P) is acknowledged. C. V. thanks the Spanish Government for a Ramon y Cajal contract (RyC-2016-20187). Access to NMR, MS and X-ray facilities from the Servei central de suport a la investigacio experimental (SCSIE)-UV is also acknowledged. ; Lluna Galán, C.; Blay, G.; Fernández, I.; Muñoz Roca, MDC.; Pedro, JR.; Vila, C. (2018). Organocatalytic Enantioselective Strecker Reaction with Seven-Membered Cyclic Imines. Advanced Synthesis & Catalysis. 360(19):3662-3666. https://doi.org/10.1002/adsc.201800754 ; S ; 3662 ; 3666 ; 360 ; 19

Ambient air quality monitoring is a governmental duty that is widely carried out in order to detect non-biological ("chemical") components in ambient air, such as particles of 500). The prevalent monitoring method is based on the Hirst principle (> 600 stations). The inventory is visualised as an interactive and on-line map. It can be searched, its appearance can be adjusted to the users' needs and it is updated regularly, as new stations or changes to those that already exist can be submitted online.The map shows the current situation of pollen and spore monitoring and facilitates collaboration among those individuals who are interested in pollen and spore counts. It might also help to improve the monitoring of biological particles up to the current level employed for non-biological components.