[EN] PROCESS TO MAKE HIGHLY SUBSTITUTED INDENES USING METAL SLAT CATALYSTS<br/>[FR] PROCÉDÉ DE PRODUCTION D'INDÈNES FORTEMENT SUBSTITUÉS À L'AIDE DE CATALYSEURS DE TYPE SEL MÉTALLIQUE
申请人:ROSOCHA GREGORY
公开号:WO2014064477A1
公开(公告)日:2014-05-01
The present invention is a process to make l-aryl-2-bromo substituted indenes and l-phenyl-2-bromo substituted indenes that can have different functional groups present around the indene ring and/or the aromatic and/or phenyl ring. The indenes are made using the corresponding 1,2- biaryl-gem-dibromocyclopropane and/or 1,2-biphenyl-gem-dibromocyclopropanes and/or 1-aryl- 2-phenyl-gem-dibromocyclopropanes using a metal salts, a solvent, low temperatures.
[EN] THE CROSS COUPLING OF 2-BROMO-1-PHENYL INDENES WITH PHENYL ACETYLENES AND OTHER SUBSTITUTED ACETYLENES IN WATER<br/>[FR] COUPLAGE CROISÉ DE 2-BROMO-1-PHÉNYL-INDÈNES AVEC DES PHÉNYL-ACÉTYLÈNES ET AUTRES ACÉTYLÈNES SUBSTITUÉS DANS L'EAU
申请人:ROSOCHA YAROSLAV GREGORY
公开号:WO2014064478A1
公开(公告)日:2014-05-01
The cross-coupling reaction of 2-bromo-1 -phenyl indenes with phenyl acetylenes or propargyl alcohol is disclosed. The cross-coupling reaction uses a palladium catalyst with triphenylphosphine in the absence of a copper co-catalyst. The reaction is carried out with pyrrolidine as the base in water at 120 °C.
PROCESS TO MAKE HIGHLY SUBSTITUTED INDENES USING METAL SLAT CATALYSTS
申请人:ROSOCHA Gregory
公开号:US20150274617A1
公开(公告)日:2015-10-01
The present invention is a process to make 1-aryl-2-bromo substituted indenes and 1-phenyl-2-bromo substituted indenes that can have different functional groups present around the indene ring and/or the aromatic and/or phenyl ring. The indenes are made using the corresponding 1,2-biaryl-gem-dibromocyclopropane and/or 1,2-biphenyl-gem-dibromocyclopropanes and/or 1-aryl-2-phenyl-gem-dibromocyclopropanes using a metal salts, a solvent, low temperatures.
THE SYNTHESIS OF TETRAHYDROISOQUINOLINES FROM 2-METHYL-1-PHENYL SUBSTITUTED INDENES
申请人:ROSOCHA Gregory
公开号:US20150284332A1
公开(公告)日:2015-10-08
A procedure for the synthesis of tetrahydroisoquinolines from 2-methyl-1-phenyl substituted indene is described. The process involves the use of osmium tetroxide to cleave the indene double bond forming the keto aldehyde product, which is then combined with a substituted amine forming the substituted isoquinoline. Isoquinolines can be useful as industrial products in the chemical, agrochemical, oil and gas industry, as well as useful as medicaments in the pharmaceutical industry.
Synthesis of 2-bromo-1-aryl-1H-indenes via a Ag(I) promoted domino 2π-electrocyclic ring-opening/4π-electrocyclization reaction of 1,2-diaryl substituted gem-dibromocyclopropanes
作者:Gregory Rosocha、Robert A. Batey
DOI:10.1016/j.tet.2013.07.086
日期:2013.10
2-Bromo-1-aryl substituted indenes can be synthesized from 1,2-diaryl substituted gem-dibromocyclopropanes via a domino reaction sequence. The cascade reaction involves silver(I) promoted ionization and 2 pi-disrotatory electrocyclic ring-opening, followed by a 4 pi-conrotatory electrocyclic ring closing reaction of the allylic carbocation intermediate. Reaction conditions utilize silver tetrafluoroborate (AgBF4) in dichloroethane at 65 degrees C. Selectivity effects for the electrocyclization were also studied. The 2-bromoindenes can be further functionalized using cross-coupling reactions, such as the Suzuki-Miyaura protocol. The alkene it-bond of the indenes can also be isomerized to give the thermodynamically more stable 2-bromo-3-aryl-1H-indene isomers using triethylamine in dichloromethane at room temperature. (C) 2013 Published by Elsevier Ltd.