Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Michael Diehm"'
Publikováno v:
Tetrahedron Letters
In continuation of earlier ‘proton sponge’ studies1, 1,2bis(dimethylamino)benzo[c]phenanthrene (2) was prepared in a multistep synthesis. In spite of its helical structure similar to diaza[6]helicene 1,2 shows in contrast to 1 ‘proton sponge’
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::306c737f7a534b1dd343da1993d536ab
https://doi.org/10.1016/0040-4039(95)00441-e
https://doi.org/10.1016/0040-4039(95)00441-e
Publikováno v:
Tetrahedron Letters
The extension of 'proton sponges' 1 and 2 by further anellation to 1,16-diaza[6]helicene (3) was of interest to define scope and limitation of 'proton sponge' properties. 3 was prepared by photocyclisation of 2,7-bis(3-pyridylvinyl)naphthalene 4 and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::395697ae6429709699fd23df41d85fab
https://doi.org/10.1016/s0040-4039(00)74406-6
https://doi.org/10.1016/s0040-4039(00)74406-6
Publikováno v:
Tetrahedron Letters
Electron impact (EI)-induced cyclizations of 1,16-diaza[6]helicene (1), of 1,14-diaza[6]helicene (2) and of 3,14-diaza[6]helicene (3) to monoazacoronenes (abundant loss of HCN and H) were investigated through their source spectra supported by accurat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14b08f2bb8155136b574e528fa2e0f53
https://hdl.handle.net/11858/00-001M-0000-0019-A8AB-C11858/00-001M-0000-002D-AFAA-6
https://hdl.handle.net/11858/00-001M-0000-0019-A8AB-C11858/00-001M-0000-002D-AFAA-6
