Synthesis of Amidines Using N-Allyl Ynamides. A Palladium-Catalyzed Allyl Transfer through an Ynamido−π-Allyl Complex
نویسندگان
چکیده
منابع مشابه
Synthesis of allyl selenides by palladium-catalyzed decarboxylative coupling.
This communication details the Pd-catalyzed decarboxylation of selenocarbonates; use of a chiral nonracemic catalyst affords enantioenriched allyl selenides which undergo stereospecific [2,3]-sigmatropic rearrangements to form enantioenriched allylic amines and chlorides.
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Allyl N-tosyloxycarbamates are found to be catalytically transformed into β-brominated oxazolidinones with FeBr(2)/n-Bu(4)NBr in t-BuOH.
متن کاملRhodium(III)-catalyzed oxidative olefination of N-allyl sulfonamides.
Rhodium(III)-catalyzed oxidative couplings between N-sulfonyl allylamines and activated olefins have been achieved. Only olefination occurred for acrylates, and the butadiene product can be further cyclized under palladium-catalyzed aerobic conditions. The coupling with N,N-dimethylacrylamide followed a cyclization pathway.
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Rhodium complexes of diazaphospholane ligands catalyze the asymmetric hydroformylation of N-vinyl carboxamides, allyl ethers, and allyl carbamates; products include 1,2- and 1,3-aminoaldehydes and 1,3-alkoxyaldehydes. Using glass pressure bottles, short reaction times (generally less than 6 h), and low catalyst loading (commonly 0.5 mol %), 20 substrates are successfully converted to chiral ald...
متن کاملCatalytic Stereospecific Allyl–Allyl Cross-Coupling of Internal Allyl Electrophiles with AllylB(pin)
Application of internal electrophiles in catalytic stereospecific allyl-allyl cross-coupling enable the rapid construction of multisubstituted 1,5-dienes, including those with all carbon quaternary centers. Compounds with minimal steric differentiation can be synthesized with high enantiomeric excess.
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ژورنال
عنوان ژورنال: Organic Letters
سال: 2009
ISSN: 1523-7060,1523-7052
DOI: 10.1021/ol802844z