128836-59-9Relevant articles and documents
Pd-catalyzed cross-coupling study of bi-functional 3-bromo-4-trifloxycoumarins with triarylbismuth reagents
Rao, Maddali L.N.,Kumar, Abhijeet
, p. 5137 - 5147 (2015)
Abstract The cross-coupling reactions of functionalized 3-bromo-4-trifloxycoumarins have been explored with threefold arylating triarylbismuth reagents. These palladium-catalyzed reactions afforded chemo-selective C-4 arylations with the facile formation of 3-bromo-4-arylcoumarins in good to high yields. Additionally, palladium-catalyzed arylations of functionalized 3-bromo-4-arylcoumarins also participated in the second arylation to give functionalized 3,4-diarylcoumarins in high yields.
Pd-catalyzed tandem chemoselective synthesis of 2-arylbenzofurans using threefold arylating triarylbismuth reagents
Rao, Maddali L. N.,Jadhav, Deepak N.,Dasgupta, Priyabrata
, p. 781 - 788 (2013/03/13)
A tandem chemoselective synthesis of 2-arylbenzofurans was accomplished from o-hydroxy-gem-(dibromovinyl)benzenes and BiAr3 reagents under palladium-catalyzed conditions. This unique and synthetically valuable strategy proceeds through three consecutive coupling reactions involving triarylbismuth reagents and provides 2-arylbenzofuran products in high yields. A tandem chemoselective synthesis of 2-arylbenzofurans was accomplished from o-hydroxy-gem-(dibromovinyl)benzenes and BiAr3 reagents under palladium-catalyzed conditions. This unique and synthetically valuable strategy proceeds through three consecutive coupling reactions involving triarylbismuth reagents and provides 2-arylbenzofuran products in high yields. Copyright
Synthesis of functionalized 2-arylthiophenes with triarylbismuths as atom-efficient multicoupling organometallic nucleophiles under palladium catalysis
Rao, Maddali L. N.,Banerjee, Debasis,Dhanorkar, Ritesh J.
supporting information; experimental part, p. 1324 - 1330 (2011/07/07)
Atom-efficient cross-coupling reactions of functionalized 2-bromo- and 2-iodothiophenes have been demonstrated using triarylbismuths as atom-efficient multicoupling organometallic nucleophiles under palladium-catalyzed conditions. These couplings with various functionalized triarylbismuths proceeded smoothly to afford the corresponding functionalized 2-arylthiophenes in high yields. Georg Thieme Verlag Stuttgart · New York.
Pd-catalyzed domino synthesis of internal alkynes using triarylbismuths as multicoupling organometallic nucleophiles
Rao, Maddali L. N.,Jadhav, Deepak N.,Dasgupta, Priyabrata
supporting information; experimental part, p. 2048 - 2051 (2010/07/03)
Figure presented The domino coupling reaction of 1,1-dibromo-1-alkenes with triarylbismuth nucleophiles has been demonstrated to furnish disubstituted alkynes directly under catalytic palladium conditions. The couplings of triarylbismuths as multicoupling nucleophiles with 3 equiv of 1,1-dibromo-1-alkenes are very fast, affording high yields of alkynes in a short reaction time. Thus, an efficient domino process has been accomplished using 1,1-dibromo-1-alkenes as surrogates for internal alkyne synthesis in couplings with triarylbismuths in a one-pot operation.
Pd-catalyzed synthesis of α-aryl ketones through couplings of α-arylacetyl chlorides with triarylbismuths as multi-coupling nucleophiles
Rao, Maddali L.N.,Giri, Somnath,Jadhav, Deepak N.
experimental part, p. 6133 - 6138 (2010/02/27)
The cross-coupling reaction of α-arylacetyl chlorides with triarylbismuths was studied under Pd-catalyzed conditions. The reaction was found to be facile under the established protocol and furnished high yields of α-aryl ketones in short reaction times. T
Evidence for the Occurrence of Substitution Side Products in Grignard Reactions
Lajis, Nordin Hj.,Khan, Mohammad Niyaz,Hassan, Hazimah A.
, p. 3405 - 3410 (2007/10/02)
In the formation of Grignard reagents from 4-bromoalkoxybenzene and their subsequent coupling reactions with allylic halides, the unusual minor side products, 8 - 14 have been obtained.
