Intramolecular Carbolithiation of 2,6-Dilithio-1,6-heptadienes: An Experimental and Theoretical Study
作者:Roberto Sanz、José M. Ignacio、Miguel A. Rodríguez、Francisco J. Fañanás、José Barluenga
DOI:10.1002/chem.200601863
日期:2007.6.4
6-heptadiene (14) has been studied experimentally. A series of ab initio molecular-orbital calculations on the course of the reaction were carried out and the results were compared to those for the corresponding intramolecularcarbolithiation of an isolated double bond. The Li-C interactions found in the transition state by this theoreticalstudy support a carbolithiation pathway for the cyclization of
Ynamide Carbopalladation: A Flexible Route to Mono‐, Bi‐ and Tricyclic Azacycles
作者:Craig D. Campbell、Rebecca L. Greenaway、Oliver T. Holton、P. Ross Walker、Helen A. Chapman、C. Adam Russell、Greg Carr、Amber L. Thomson、Edward A. Anderson
DOI:10.1002/chem.201501710
日期:2015.9
Bromoenynamides represent precursors to a diversity of azacycles by a cascade sequence of carbopalladation followed by cross‐coupling/electrocyclization, or reduction processes. Full details of our investigations into intramolecular ynamidecarbopalladation are disclosed, which include the first examples of carbopalladation/cross‐coupling reactions using potassium organotrifluoroborate salts; and an
Rh-Catalyzed Enantioselective Hydrogenation of Vinyl Boronates for the Construction of Secondary Boronic Esters
作者:Wesley J. Moran、James P. Morken
DOI:10.1021/ol060735u
日期:2006.5.1
[reaction: see text] Rh-catalyzed hydrogenation of prochiral vinyl boronates occurs in an enantioselective fashion in the presence of the chiral ligand Walphos 1. This transformation provides access to chiral secondary organoboronates that are not available from alkene hydroboration reactions. The chiral reaction products should be useful in organic synthesis, and preliminary experiments suggest that
The preparation of 2-bromo-3-(tri-n-butylstannyl)-1-propene is described. This study characterizes the reactivity of 2-bromo-3-(tri-n-butylstannyl)-1-propene in SE′ reactions with aldehydes and includes a survey of radical reactions of 2-bromo-3-(tri-n-butylstannyl)-1-propene with α-bromocarbonyl compounds for C-alkylation.
[EN] PROCESS FOR THE PREPARATION OF 3-(1-CYCLOPROPENYL) PROPIONIC ACID AND ITS SALTS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE L'ACIDE 3-(1-CYCLOPROPÉNYL)PROPIONIQUE ET DE SES SELS
申请人:DPHARM LTD
公开号:WO2011086561A1
公开(公告)日:2011-07-21
The present invention relates to a process for the preparation of highly pure 3-(1-cyclopropenyl) propionic acid salt, particulary 3-(1-cyclopropenyl) propionic acid sodium salt, an ethylene receptor antagonist that may be used for inhibiting the abscission and ripening of plants and for prolonging the life of picked fruit, vegetable and cut flowers.