- Catalytic features of the reaction of oxidative cross-coupling of styrene and hexene-1
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The reaction of oxidative cross-coupling of styrene and hexene-1 in the medium of ice acetic acid was studied in the presence of various active phases based on palladium deposited on carbon-containing carrying agents, activated carbon, fullerenes, astrale
- Grisha,De Vekki
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body text
p. 407 - 412
(2012/08/08)
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- Oxidative cross-coupling of styrene and 1-hexene in acetoxylation reaction conditions
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Reaction of heterogeneous-catalytic coupling of styrene and 1-hexene in glacial acetic acid was studied for the first time.
- Grisha,De Vekki
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experimental part
p. 1903 - 1908
(2012/03/12)
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- Polymer-bound palladium-catalyzed cross-coupling of organoboron compounds with organic halides and organic triflates
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The polymer-bound palladium-catalyzed cross-coupling reaction of electrophiles (i.e., halides and triflates) with oganoboron compounds to form carbon-carbon bonds was achieved at mild conditions with very high activity in the Suzuki coupling reaction. The polymeric catalyst can be easily separated from a reaction mixture and reused more than 10 times with no decrease in activity.
- Jang, Su-Bum
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p. 1793 - 1796
(2007/10/03)
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- Novel and Convenient Method for the Stereo- and Regiospecific Synthesis of Conjugated Alkadienes and Alkenynes via the Palladium-Catalyzed Cross-Coupling Reaction of 1-Alkenylboranes with Bromoalkenes and Bromoalkynes
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Details of a new and general method for the stereo- and regiospecific synthesis of conjugated alkadienes and alkenynes are described.The reaction of (E)- or (Z)-1-alkenyldisiamylboranes, or 2-((E)-1-alkenyl)-1,3,2-benzodioxaboroles readily obtainable by hydroboration, with either (E)- or (Z)-1-alkenyl bromides in the presence of a catalytic amount of tetrakis(triphenylphosphine)palladium and bases such as sodium alkoxides gives the corresponding (E,E)-, (E,Z)-, (Z,E)-,or (Z,Z)-conjugated alkadienes stereo- and regiospecifically, while retaining the configurations of both the strating alkenylboranes and bromoalkenes.The reaction of (E)- and (Z)-1-alkenyldisiamylboranes with 1-bromoalkynes similarly provides a stereo- and regiospecific synthesis of conjugated (E)- and (Z)-alkenynes.A mechanism of this cross-coupling reaction, which involves the transmetalation between a 1-alkenylborane and an alkoxypalladium(II) complex generated through the metathetical displacement of a halogen atom from R(Pd(II)X with sodium alkoxide, is proposed.
- Miyaura, Norio,Yamada, Kinji,Suginome, Hiroshi,Suzuki, Akira
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p. 972 - 980
(2007/10/02)
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- A Synthesis of Conjugated Dienes from Aromatic, Five-membered Heterocycles
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Reactions of furan, thiophene, selenophene, and tellurophene as well as 2-methyl and 2,5-dimethyl derivatives of the first two heterocycles with phenyl-, methyl-, and n-butyl-magnesium bromides in the presence of ligated nickel dichloride are shown to yield buta-1,3-dienes mostly with retention of configuration.
- Wenkert, Ernest,Leftin, Michael H.,Michelotti, Enrique L.
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p. 617 - 618
(2007/10/02)
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- A STEREOSPECIFIC SYNTHESIS OF CONJUGATED (E,Z)- AND (Z,Z)-ALKADIENES BY A PALLADIUM-CATALYZED CROSS-COUPLING REACTION OF 1-ALKENYLBORANES WITH 1-ALKENYL BROMIDES
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The reactions of (Z)-1-alkenyldisiamylboranes with (Z)- or (E)-1-alkenyl bromides in the presence of a catalytic amount of tetrakis(triphenylphosphine)palladium and sodium ethoxide gave the corresponding conjugated (Z,Z)- or (Z,E)-alkadiene with high ster
- Miyaura, Norio,Suginome, Hiroshi,Suzuki, Akira
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p. 127 - 130
(2007/10/02)
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