Organoselenium-catalyzed synthesis of oxygen- and nitrogen-containing heterocycles
A new and efficient approach for the synthesis of oxygen and nitrogen heterocycles by organoselenium catalysis has been developed. The exo-cyclization proceeded smoothly under mild conditions with good functional group tolerance and excellent regioselectivity. Mechanistic studies revealed that 1-fluoropyridinium triflate is key for oxidative cyclization.
Intermolecular addition reaction to alkenes of acylmolybdenum complexes generated by oxidative addition of aryl or alkenyl halides with molybdenum(0) carbonyl complexes
Acylmolybdenum species, generated by oxidative addition of aryl or alkenyl halides with molybdenum(0) carbonyl complex followed by carbon monoxide insertion, added to various kinds of alkenes intermolecularly to give simple addition products in good yields without formation of carbonylative Heck-type products. Georg Thieme Verlag Stuttgart.
Oxygenated heterocyclic compounds, pharmaceutical compositions containing them
Compounds having antiparasitic properties are 1,2,4-trioxanes of the formula: in which:, R1 and R2 together with the adjacent carbon atom form a cycloalkyl group which may be interrupted by an oxygen atom;, R3 is a hydrogen atom or a hydroxyl gorup or eth
-
(2008/06/13)
More Articles about upstream products of 155722-95-5