Palladium-catalyzed norbornene-carbon monoxide co-oligomerization initiated by aryl groups and terminated by double bond formation
摘要:
The use of m-iodophenol as initiator in palladium-catalyzed norbornene-carbon monoxide oligomerization in the presence of potassium acetate unexpectedly leads to termination by double bond formation in spite of the limitations to beta-H-anti elimination. The presence of endo products points to preliminary exo-to-endo isomerization through enolization. The X-ray structure of one stereoisomer (Ia) is given.
[EN] PROCESS FOR THE SYNTHESIS OF BETA-AMINOCARBONYLS<br/>[FR] PROCÉDÉ DE SYNTHÈSE DE BÉTA-AMINOCARBONYLES
申请人:UNIV OTTAWA
公开号:WO2013067646A1
公开(公告)日:2013-05-16
The present application provides processes and intermediates useful in the production of β- aminocarbonyl- or β-aminothiocarbonyl-containing compounds. Provided herein is a process for synthesizing β-aminocarbonyl- or β-aminothiocarbonyl-containing compounds from an alkene and a hydrazone. Also provided herein is a process for synthesizing β-aminocarbonyl- or β-aminothiocarbonyl-containing compounds from an alkene and a hydrazine. The present application further provides intermediate aminoisocyanate and iminoisocyanate compounds, and methods for synthesizing the starting hydrazone and hydrazine compounds.
Solvent-Free Chelation-Assisted Catalytic CC Bond Cleavage of Unstrained Ketone by Rhodium(I) Complexes under Microwave Irradiation
作者:Jeong-Ae Ahn、Duck-Ho Chang、Young Jun Park、Ye Rim Yon、André Loupy、Chul-Ho Jun
DOI:10.1002/adsc.200505233
日期:2006.1
A highly efficient CC bond cleavage of unstrained aliphatic ketones bearing β-hydrogens with olefins was achieved using a chelation-assisted catalytic system consisting of (Ph3P)3RhCl and 2-amino-3-picoline by microwave irradiation under solvent-free conditions. The addition of cyclohexylamine catalyst accelerated the reaction rate dramatically under microwave irradiation compared with the classical
Double acylation of alkenes such as norbornene and vinylsilane proceeds by the use of acylchromate complexes and a cationic Pd(II) complex. When two different acylchromates are added successively to a mixture of alkene and the Pd complex, unsymmetrical diketones are obtained almost selectively.
Kuchin, A. V.; Nurushev, R. A.; Khalilov, L. M., Journal of general chemistry of the USSR, 1987, p. 1574 - 1579
作者:Kuchin, A. V.、Nurushev, R. A.、Khalilov, L. M.、Tolstikov, G. A.
DOI:——
日期:——
Hydroboration. 87. Controlled and sequential hydroboration of simple representative alkenes with methylborane in tetrahydrofuran. An examination of the directive effects in the first and second stages of hydroboration