Formamide as a superior nitrogen nucleophile in palladium(II) mediated synthesis of imidazolidines
作者:Rolf A.T.M. van Benthem、Henk Hiemstra、Gema Rodríguez Longarela、W.Nico Speckamp
DOI:10.1016/0040-4039(94)88488-9
日期:1994.12
Formamides emerge as superiornitrogennucleophiles in palladium(II) catalyzed oxidative 5-exo cyclizations of formaldehyde aminals derived from N-Boc protected allylic amines. The product imidazolidines are readily transformed into protected vicinal diamines.
Scalable Asymmetric Synthesis of the All <i>Cis</i> Triamino Cyclohexane Core of BMS-813160
作者:Thomas E. La Cruz、Francisco González-Bobes、Martin D. Eastgate、Chris Sfouggatakis、Bin Zheng、Nathaniel Kopp、Yi Xiao、Yu Fan、Kay A. Galindo、Charles Pathirana、Michael A. Galella、Joerg Deerberg
DOI:10.1021/acs.joc.1c01162
日期:2022.2.18
methodology was a key tool used to produce a synthesis intermediate with high optical purity. In addition, developing a tandem Mannich–aza-Michael reaction to obviate the need for a Curtis/acylation sequence and a novel reductive amination/thermal lactamization to circumvent Freidinger-type pyrrolidone preparation are some of the synthesisimprovements that enabled access to the target molecule to
The invention relates to novel heteroaryl compounds of Formula (I) and pharmaceutical preparations thereof. The invention further relates to methods of treating or preventing cardiovascular diseases, and methods treating sepsis or septic shock, using the novel heterocyclic compounds disclosed herein.
Synthesis of N-Boc-protected 1-amino-3-alken-2-ols from allylic carbamates via palladium(II)-catalyzed oxidative cyclization
作者:Rolf A. T. M. Van Benthem、Henk Hiemstra、W. Nico Speckamp
DOI:10.1021/jo00049a001
日期:1992.11
Methyl glyoxylate adducts of N-Boc-protected allylic amines cyclize in the presence of catalytic Pd(OAc)2 and excess Cu(OAc)2 in DMSO to 5-(1-alkenyl)-2-(methoxycarbonyl)oxazolidines. These heterocycles are readily converted to unsaturated N-Boc-protected beta-amino alcohols through anodic oxidation and mild hydrolysis.