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Ambient air monitoring was conducted at Datianshan landfill, Guangzhou, South China in 1998 to investigate the seasonal and horizontal variations of trace volatile organic compounds (VOCs). Twelve sampling points over the Datianshan landfill were selected and samples were collected simultaneously using CarbontrapTM adsorption tubes. Thirty eight VOCs were detected in the winter, whereas 60 were detected...
An efficient synthesis of prop-1-ene 1,3-sultam 4 and its Diels–Alder reactions is reported. Sultams are also prepared as chiral auxiliaries for asymmetric transformations.
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