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作者:Nitya G Kundu , M.Wahab Khan
来源:[J].Tetrahedron(IF 2.803), 2000, Vol.56 (27), pp.4777-4792
摘要:Abstract(#br)A highly regio- and stereoselective method for the synthesis of ( Z )-3-aryl(alkyl)idene isoindolin-1-ones through palladium-copper catalysis is described. 2-Iodobenzamide 1 and its substituted derivatives 2 – 10 were reacted with terminal alkynes 11 – 19 in the...
作者:Nitya G Kundu , Gopeswar Chaudhuri
来源:[J].Tetrahedron(IF 2.803), 2001, Vol.57 (31), pp.6833-6842
摘要:Abstract(#br)A highly regio- and stereoselective procedure for the synthesis of 2-substituted-1,2,3,4-tetrahydroquinazolinones through a two-step procedure, e.g. (i) palladium–copper catalysed C -arylation of terminal alkynes and (ii) copper-catalysed cyclisation of disubsti...
作者:Nitya G Kundu , Gopeswar Chaudhuri
来源:[J].Tetrahedron Letters(IF 2.397), 2001, Vol.42 (15), pp.2883-2886
摘要:Abstract(#br)2-[ N -Alkyl(benzyl)- N -(prop-2′-ynyl)]aminobenzamides 5 reacted with aryl iodides 2 under palladium–copper catalysis to yield disubstituted alkynes 6 – 13 , which underwent a novel cyclisation in the presence of CuI, K 2 CO 3 , n -Bu 4 NBr in acetonitrile...
作者:Nitya G Kundu , Bidisha Nandi
来源:[J].Tetrahedron(IF 2.803), 2001, Vol.57 (27), pp.5885-5895
摘要:Abstract(#br)3-[2-( N - p -Toluenesulfonyl)aminophenylthio]prop-1-yne, reacted with aryl iodides in the presence of Et 3 N in THF solution with (PPh 3 ) 2 PdCl 2 (3 mol%) and CuI (40 mol%) at room temperature for 8 h followed by reflux for 20 h to yield diaryl sulfides by a depro...
作者:Bidisha Nandi , Kausik Das , Nitya G Kundu
来源:[J].Tetrahedron Letters(IF 2.397), 2000, Vol.41 (37), pp.7259-7262
摘要:Abstract(#br)3-[2-( N - p -Toluenesulfonyl)aminophenylthio]prop-1-yne ( 4 ) reacted with aryl iodides 5 – 14 under palladium–copper catalysis to afford (2-arylthio)- p -toluenesulfonanilide ( 15 – 23 ) in moderate to good yields (54–64%) through unusual depropargylation...
作者:Rupa Mukhopadhyay , Nitya G Kundu
来源:[J].Tetrahedron(IF 2.803), 2001, Vol.57 (46), pp.9475-9480
摘要:Abstract(#br)2-Iodobenzyl alcohol on treatment with acetylenic carbinols in the presence of a palladium catalyst and copper(I) iodide as a co-catalyst afforded disubstituted alkynes. Jones oxidation of the disubstituted alkynes led to ( E )-3-alkylidene isobenzofuran-1(3 H )-ones...
作者:... Mahuya De , Palas Das , Nitya G Kundu
来源:[J].Tetrahedron(IF 2.803), 1997, Vol.53 (39), pp.13397-13418
摘要:Abstract(#br)o -Iodoanilides 4 reacted with terminal acetylenic carbinols 5 under palladium-catalyzed conditions to yield o -substituted anilides 6 . Most of the anilides 6 could be cyclized with NaOEt/EtOH to 2-arylquinolines 2 . o -Iodoanilines 7 reacted with carbinols 5 leadin...
作者:Rupa Mukhopadhyay , Nitya G Kundu
来源:[J].Tetrahedron Letters(IF 2.397), 2000, Vol.41 (50), pp.9927-9930
摘要:Abstract(#br)N -[(3′-Aryl)prop-2′-ynyl]- N , N ′-1,2-phenylene di- p -tosylamides, 15 – 22 , underwent an unusual ring closure with potassium carbonate (2 equiv.) and copper(I) iodide (10 mol%) in DMF at 100°C for 24 h to yield 2-aroylquinoxalines ( 23 – 30 ) inste...
作者:Chinmay Chowdhury , Nitya G Kundu
来源:[J].Tetrahedron(IF 2.803), 1999, Vol.55 (22), pp.7011-7016
摘要:Abstract(#br)Terminal alkynes reacted with acid chlorides in the presence of cuprous iodide as a catalyst in Et 3 N at room temperature yielding a number of α,β-acetylenic ketones in good to excellent yields.

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