Apparent Carbon Monoxide Insertion<i>via</i>Double Isocyanide Incorporation during Palladium-Catalyzed Construction of Indoloquinoline Ring in a Single Pot: Synthesis of New Cytotoxic Agents
isocyanide units during a palladium‐catalyzed construction of the indoloquinoline ring afforded N‐substituted 6H‐indolo[2,3‐b]quinoline‐11‐carboxamides as new cytotoxic agents. The solvent and base play a key role in the selective and unprecedented synthesis of this class of amides.
在吲哚喹啉环的钯催化构建过程中通过结合两个异氰酸酯单元形成酰胺键,从而提供了N-取代的6 H-吲哚并[2,3 - b ]喹啉-11-羧酰胺作为新的细胞毒性剂。溶剂和碱在此类酰胺的选择性和空前的合成中起关键作用。
Palladium‐Catalyzed Enantioselective Intramolecular Heck Carbonylation Reactions: Asymmetric Synthesis of 2‐Oxindole Ynones and Carboxylic Acids
A catalytic enantioselective domino Heck carbonylation reaction of o-iodoacrylanilides with phenylacetylenes or water has been developed using a Pd/(Cu) catalytic system containing a chiral diphosphine ligand L9, furnishing a wide array of chiral β-carbonylated 3,3-disubstituted oxindoles in high yields with up to 99 % ee values.
paper describes the preparation of indoles, azaindoles and benzofurans in pure water by using a new heterogeneous Pd-Cu/C catalyst through a cascade Sonogashira alkynylation-cyclization sequence. Details of the optimization studies and the substrate scope are discussed. This procedure allows the preparation of heterocycles with good yields and is tolerant to a wide variety of functional groups.
Synthesis of 2-BMIDA 6,5-bicyclic heterocycles by Cu(<scp>i</scp>)/Pd(0)/Cu(<scp>ii</scp>) cascade catalysis of 2-iodoaniline/phenols
作者:Ciaran P. Seath、Kirsty L. Wilson、Angus Campbell、Jenna M. Mowat、Allan J. B. Watson
DOI:10.1039/c6cc04554e
日期:——
A one-pot cascade reaction for the synthesis of 2-BMIDA 6,5-bicyclic heterocycles has been developed using Cu(I)/Pd(0)/Cu(II) catalysis. 2-Iodoanilines and phenols undergo a Cu(I)/Pd(0)-catalyzed Sonogashira reaction with ethynyl BMIDA followed by...