Pyrrolizidinone and indolizidinone synthesis: generation and intramolecular addition of .alpha.-acylamino radicals to olefins and allenes
作者:Duane A. Burnett、Joong Kwon Choi、David J. Hart、Yeun Min Tsai
DOI:10.1021/ja00338a033
日期:1984.12
Des radicaux α-acylamino peuvent etre generes par traitement de derives de phenylthio-2-, phenylseleno-2 ou methylthio-2 butene-3'yl-1 pyrrolidones-2 par l'hydrure de tributyl-Sn en presence de AIBN. Ces radicaux subissent des reactions intramoleculaires pour donner des indolizidinones et des pyrrolizidinones
Des radicaux α-acylamino peuvent etregeneres par traitement de 衍生 de phenylthio-2-, phenylseleno-2 oumethylthio-2 butene-3'yl-1 pyrrolidones-2 par l'hydrure de tributyl-Sn en Ces radicaux subissent des反应分子内反应donner des indolizidinones et des pyrrolizidinones
Synthesis of some quaternary ammonium alkylating agents and their effects on soman-inhibited acetylcholinesterase
作者:Allan P. Gray、Robert D. Platz、Timothy C. P. Chang、Theresa R. Leverone、David A. Ferrick、David N. Kramer
DOI:10.1021/jm00379a020
日期:1985.1
to realkylate the phosphonate anion of "aged", soman-inhibited acetylcholinesterase. None were found able to do so, but two of the compounds in particular, [2-(4-pyridyl)ethyl]diethylmethylammonium iodide (6) and its 2-isomer 7, proved able to slow the rate of aging significantly.
Stereoselective Synthesis of Amido and Phenyl Azabicyclic Derivatives via a Tandem Aza Prins-Ritter/Friedel–Crafts Type Reaction of Endocyclic <i>N</i>-Acyliminium Ions
作者:Kiran Indukuri、R. Unnava、Manash J. Deka、Anil K. Saikia
DOI:10.1021/jo401450j
日期:2013.11.1
A simple protocol is described for the synthesis of amido and phenyl hexahydroindolizin-3(2H)-one, hexahydro-1H-quinolizin-4(6H)-one, and 1,3,4,10b-tetrahydropyrido[2,1-a]isoindol-6(2H)-one derivatives via endo-trig (aza-Prins type) cyclization followed by an intermolecular Ritter/Friedel–Crafts reaction of cyclic N-acyliminium ions, which are derived from the boron trifluoride etherate treatment of
Ring-closing olefin meta thesis for the synthesis of fused nitrogen heterocycles
作者:Stephen F. Martin、Hui-Ju Chen、Anne K. Courtney、Yusheng Liao、Michael Pätzel、Melissa N. Ramser、Allan S. Wagman
DOI:10.1016/0040-4020(96)00249-9
日期:1996.5
efficient synthesis of fused nitrogen heterocycles containing various combinations of five- and eight-membered rings has been developed. This method features the ring-closingmetathesis (RCM), which is catalyzed by the molybdenumalkylidenecomplex 6, of α,ω-dienes that have a nitrogen atom in the chain linking the two olefinic functional groups.
Titanium- and Lewis Acid-Mediated Cyclopropanation of Imides
作者:Philippe Bertus、Jan Szymoniak
DOI:10.1021/ol062938o
日期:2007.2.1
We report a straightforward synthesis of 1-azaspirocyclopropane lactams from imides. Following the described procedure, polycyclic nitrogenheterocycles containing a cyclopropane unit could be obtained from unsaturated imides. [reaction: see text].