Method for conversion of terminal alkenes to aldehydes using ruthenium(IV) porphyrin catalysts
申请人:Che Chi-Ming
公开号:US20060041121A1
公开(公告)日:2006-02-23
Aldehydes were obtained in excellent yields from ruthenium-porphyrin-catalyzed oxidation of various terminal alkenes with 2,6-dichloropyridine N-oxide under mild conditions. The aldehydes generated from these ruthenium-catalyzed alkene oxidation reactions can be used in-situ for olefination reactions with ethyl diazoacetate in the presence of PPh
3
, leading to one-pot diazoacetate olefination starting from alkenes.
Cycloaddition Reactions of Carbonyl Ylides Derived From Enones
作者:Pauline Chiu、Yang Yu、Loïc Cornelissen、Wing-Tak Wong
DOI:10.1055/s-0034-1379926
日期:——
The formation of unsaturated carbonylylides via rhodium-catalyzed carbene cyclization with enones and their subsequent inter- and intramolecular cycloadditions to construct functionalized oxapolycyclic rings have been realized.
A New and Convenient Method of Synthesis of γ-Ketoaldehydes
作者:O. G. Kulinkovich、I. G. Tischenko、V. L. Sorokin
DOI:10.1055/s-1985-31427
日期:——
A new synthesis of 4-oxoalkanals starting from acid chlorides and allyl chloride proceeding via alkyl 2,3-dichloropropyl ketones, alkyl 3-chloropropenyl ketones, alkyl 3-chloro-2-methoxypropyl ketones, and 1-alkanoyl-2-methoxycyclopropanes is described.
Formation and Stability of Pyrrole Adducts in the Reaction of Levuglandin E2 with Proteins
作者:Elso DiFranco、Ganesamoorthy Subbanagounder、Seokchan Kim、Krishnakumar Murthi、Shinji Taneda、Vincent M. Monnier、Robert G. Salomon
DOI:10.1021/tx00043a008
日期:1995.1
that found for a pyrrole derived from LGE2 and 6-amino-1-hexanol. Because the initial metastable LG-protein adduct is a reactiveelectrophile, it can be trapped with amines, such as glycine, to give stable ternary adducts that do not cross-react with the antibodies. Although highly alkylated pyrroles are chemically sensitive compounds, the protein-bound LG-derived pyrrole appears to be stable in aqueous
Immunochemical Evidence Supporting 2-Pentylpyrrole Formation on Proteins Exposed to 4-Hydroxy-2-nonenal
作者:Lawrence M. Sayre、Wei Sha、Guozhang Xu、Kamaljit Kaur、Durgesh Nadkarni、Ganesamoorthy Subbanagounder、Robert G. Salomon
DOI:10.1021/tx960094j
日期:1996.1.1
Previous model studies suggested the formation of lysine-based 2-pentylpyrroles as novel late adduction products formed upon exposure of proteins to the lipidperoxidation product 4-hydroxy-2-nonenal (HNE). Two 2-pentylpyrrole immunogens were prepared, one by treating keyhole limpet hemocyanin (KLH) directly with 4-oxononanal and the other by preformation of 6-(2-pentylpyrrol-1-yl)hexanoic acid from 6-aminocaproic