Now showing items 1-10 of 12
11α-Hydroxy muzigadiolide, a novel drimane sesquiterpene from the stem bark of warburgia ugandensis
(Bulletin of the Chemical Society of Ethiopia, 1999-12-03)
The plant was identiﬁed by Prof. MS Rajab by comparison with a preserved standard specimen at the National Museum I-lerbarium in Nairobi, Kenya. .
Reduction of electron-deficient pyrroles using group I and II metals in ammonia
(RSC Publishing, 1998)
The preparation and Birch reduction of a series of electron-deficient pyrroles is described. This methodology allows the synthesis of a variety of C-2 substituted 3-pyrrolines ‡ in good to excellent yields. The role of ...
The Birchreduction of 3-substituted pyrroles
The Birchreduction of electron-deficient 3-substituted pyrroles is described. Use of a reductive alkylation procedure involving sodium metal in liquid ammonia gave good yields of 4-alkyl-2-pyrrolines. The identity of these ...
The stereoselectiveBirchreduction of pyrroles
The Birchreduction has been applied to electron-deficient pyrroles substituted with a chiral auxiliary at the C-2 position. Using either 8-phenylmenthol ortrans-2-(α-cumyl)cyclohexanol (TCC) as auxiliaries, high levels of ...
ChemInform Abstract: Birch Reduction of Electron-Deficient Pyrroles.
(Wiley Online Library, 1997-03-11)
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please ...
Groundwater resources and sea water intrusion in Kwale District
This work describes the results of water quality analysis carried out along the coastal plains of Kwale District, Kenya, to determine the influence of sea water intrusion, the relationship between tidal changes and water ...
Presentdayoredeposition in the geothermalsystems of kenya—i. the mwananyamalahotsprings, northeast of jombohill, coastprovince
The Mwananyamalageothermal field extends over an area of 4 km x 11 km in a region of faulted Permo—Triassic sandstones. The sandstones consist of deltaic arkoses, and fluvio-lacustrine shales, siltstones and sandstones. ...
Stableisotopestudies of some lowenthalpygeothermalsystems in Kenya
Oxygen and hydrogen isotope compositions of some lowenthalpygeothermalsystems in Kenya have been determined. Plots on View the MathML source versus δD diagrams show that the compositions do not deviate appreciably from ...
Fluid/mineralequilibriumcalculations for geothermalfluids and chemicalgeothermometry
Aquifer temperatures of 13 geothermal wells in Iceland whose measured reservoir temperatures range from 47 to 325°C have been estimated from the chemical composition of the discharged fluid by considering simultaneously ...
Geothermalenergy research in Kenya: a review
Geothermalenergy for electricity generation is likely to become increasingly important in Kenya in the future. There are numerous centres of thermal activity in Kenya, particularly within the Rift Valley, although aridity ...