Z-Selective Olefin Synthesis via Iron-Catalyzed Reductive Coupling of Alkyl Halides with Terminal Arylalkynes
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The use of commercially available azide sources is presented for the cobalt-catalyzed hydroazidation reaction. α,α-Disubstituted olefins with a variety of functional groups were employed as substrates, providing tertiary azides in useful yields. ...
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Optically active 1,3-diethynylallenes (DEAs) were prepd. by enantioselective Pd-mediated SN2'-type cross-coupling and their abs. configuration was detd. by X-ray anal. Addn. of tetracyanoethene (TCNE) to donor-substituted DEAs affords novel 1,1,4,4-tetracy ...
In the first part, we described the synthesis of C-(1'→1) and C-(1'→4) disaccharide precursors, which are readily obtained via the carbonylative Stille coupling of glucal and isolevoglucosenone derivatives. Tin glycals and triflates, derived from isolevogl ...
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In the presence of iron(II) chloride (FeCl2 ; 20 mol%) and potassium tert-butoxide (t- BuOK; 4 equiv.) in dimethyl sulfoxide (DMSO), aryl and heteroaryl iodides undergo stereoselective Mizoroki–Heck C—C cross-coupling reactions with styrenes at 60 8C givin ...
Synergic effect of iron and copper salts as catalysts for the Sonogashira–Hagihara cross-couplings of aryl iodides with terminal alkynes is demonstrated. High yields of cross- coupled products are obtained under conditions that are smoother than those usin ...
Palladium(II) complexes with N,N-bis(diphenylphosphino)aniline ligands catalyze the Heck reaction between styrene and aryl bromides, affording stilbenes in good yield. The structures of two of the complexes used as pre-catalysts have been detd. by single-c ...
Task-specific ionic liquids bearing nitrile functional groups attached to the cation and nitrogen-donor-containing anions strongly affect the efficiency of the Stille cross-coupling, influencing the nature of the catalyst and its stability. The relative st ...
