A mild, convenient protocol for the synthesis of cis-aziridines employs a catalytic amount of Brnsted acid. Diazo compound decomposition via alkylation or homocoupling upon exposure to a proton source is slow relative to [2 + 1] annulation in the presence of a Schiff base. A. L. Williams, J. N. Johnston, J. Am. Chem.
The tropical savanna is a biome characterized by tall grasses and occasional trees. Large regions of tropical savanna extend through the nations of Botswana, Namibia, and Kenya in Africa, southern Brazil, India, and Australia. Surprisingly, the Everglades of southern Florida in North America is also a tropical savanna. Photo  2000-www.arttoday.com.
Environmental Protection in Botswana. Botswanaâs commitment to the sustainable management of natural resources is supported by. various policies and legislation as well as by Vision 2016, which states that: By the year 2016, economic growth and development in Botswana will be. sustainable. Renewable resources will be used at a rate that is in balance. with their regeneration capacity â¦ The wildlife of Botswana will be managed. for the sustainable benefit of the local communities, and in the interests of the. environment as a whole â¦ By the year 2016, Botswana will have taken.