Novel route to fused nitrogen heterocycles by olefin metathesis
作者:Stephen F. Martin、Yusheng Liao、Hui-Ju Chen、Michael Pätzel、Melissa N. Ramser
DOI:10.1016/0040-4039(94)88060-3
日期:1994.8
A novel technique for the efficient synthesis of fused nitrogen heterocycles has been developed that features the molybdenum alkylidene-catalyzed metathesis of α,ω-dienes containing a nitrogen atom in the chain linking the two olefinic functional groups. The starting materials may be readily prepared in three steps from succinimide and glutarimide via sequential Mitsunobu alkylation, sodium borohydride
Allenylmethylsilanes as Nucleophiles in <i>N</i>-Acyliminium Ion Chemistry
作者:Gertjan Mentink、Jan H. van Maarseveen、Henk Hiemstra
DOI:10.1021/ol026615d
日期:2002.10.1
precursors with 2,3-butadienyl(trimethyl)silane and related allenes in the presence of BF(3).OEt(2) provides good yields of N-protected 2-(aminomethyl)-substituted 1,3-dienes, which prove to be useful substrates for subsequent Diels-Alder and alkene metathesis reactions. [reaction: see text]
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.