Process for the preparation of decahydro-2a,4a,6a,8a-tetraazacyclopent[fg]acenaphthylene and functionalized derivatives
申请人:——
公开号:US20040014974A1
公开(公告)日:2004-01-22
A process for the preparation of compound of formula (I A), decahydro-2a,4a,6a,8a-tetraazacyclopent[fg]accnaphthylene and the corresponding functionalized compounds of general formula (1), intermediates for the preparation of 1,4,7,10-tetraazacyclododecane (II A) and corresponding derivatives (II), by preparation of compounds of general formula (III) and subsequent reduction thereof.
1
Modes of complexation of bis-aminals of linear tetraamines with Group 6 metal carbonyls
作者:Gwénaëlle Hervé、Nathalie Le Bris、Hélène Bernard、Jean-Jacques Yaouanc、Hervé des Abbayes、Henri Handel
DOI:10.1016/s0022-328x(99)00232-6
日期:1999.8
On reaction with Group6metalcarbonyls M(CO)6, vic type bis-aminals L, issued from the condensation of an α-dicarbonyl compound on a linear tetraamine, give rise to mononuclear cis-M(CO)4L complexes.
Synthesis and NMR characterization of cis and trans decahydro-2a,4a,6a,8a-tetraazacyclopent[fg]acenaphthylene. Solid state structure of the trans stereoisomer. Modelling studies
作者:Maria Argese、Marino Brocchetta、Mario De Miranda、Andrea Ferraris、Paolo Dapporto、Paola Paoli、Patrizia Rossi
DOI:10.1016/j.tet.2007.04.036
日期:2007.7
results were confirmed by the solid state structure of the trans isomer (10) determined by single crystal X-ray diffraction. Given that the trans bis-aminal species 2 and 4 can undergo rearrangement, i.e. stereoisomerization into the corresponding cis ones (1 and 3, respectively), the conformational behaviour of species 1–4 was investigated by means of both molecular mechanics (MM) and quantum chemical (QC)