Zobrazeno 1 - 10
of 841
pro vyhledávání: '"Herbert Meier"'
Publikováno v:
ARKIVOC, Vol 2013, Iss 4, Pp 21-43 (2013)
Externí odkaz:
https://doaj.org/article/9739b76234fb4f02a70b982b13d84b52
Autor:
Herbert Meier, Johannes C. Liermann, Yehia A. Ibrahim, Noha Mohamed Hilmy, Saleh Mohammed Al-Mousawi, Moustafa Sherief Moustafa, Mohamed Hilmy Elnagdi
Publikováno v:
Molecules, Vol 18, Iss 1, Pp 276-286 (2012)
Reaction of enaminones 1a–d with 2-aminoprop-1-ene-1,1,3-tricarbonitrile (2) in the presence of AcOH/NH4OAc afforded 7-amino-5-oxo-5,6-dihydro-1,6-naphthyridine-8-carbonitrile derivatives 9a–d. On the other hand, 2-aminopyrano[4,3,2-de] [1,6]naph
Externí odkaz:
https://doaj.org/article/e8bdbdd11f274d57970594d09b6470b1
Autor:
Herbert Meier
Publikováno v:
Molecules, Vol 17, Iss 2, Pp 1548-1570 (2012)
Benzo-condensed four-ring heterocycles, such as benzoxetes 1 and benzothietes 3 represent multi-purpose starting compounds for the preparation of various higher heterocyclic ring systems. The thermal or photochemical valence isomerizations between th
Externí odkaz:
https://doaj.org/article/36a376f4276948ac8a56c3682d9d0971
Publikováno v:
Revista Colombiana de Química, Vol 21, Iss 1,2, Pp 29-32 (2010)
Se estudió la ciclocondensación de chalconas con 3-amino-5-pirazolona, la cual lleva a la formación de 2-aril-4-fenil-5-oxopirazolo[4,5-b]piridinas. Las estructuras de los compuestos obtenidos se determinó con base en los análisis espectroscóp
Externí odkaz:
https://doaj.org/article/db1efb0ccb8843acbd5dc51d0230a3de
Publikováno v:
Materials, Vol 3, Iss 5, Pp 3218-3330 (2010)
The present review deals with the preparation and the properties of star-shaped conjugated compounds. Three, four or six conjugated arms are attached to cross-conjugated cores, which consist of single atoms (B, C+, N), benzene or azine rings or polyc
Externí odkaz:
https://doaj.org/article/6b81e6a3ee684b9692ebfbbe550082ad
Autor:
Mohamed Hilmy Elnagdi, Heinz Kolshorn, Herbert Meier, Saleh M. Al-Mousawi, Moustafa Sherief Moustafa
Publikováno v:
Molecules, Vol 14, Iss 2, Pp 798-806 (2009)
Phenacylmalononitrile 1 reacts with dimethylformamide dimethyl acetal to yield an enaminone which could be readily converted into a pyrrole or an aminopyridazine by treating with ammonium acetate and hydrazine hydrate, respectively. Compound 1 reacte
Externí odkaz:
https://doaj.org/article/bd09cb1ce1fb46f38199cd04df2b408a
Publikováno v:
ARKIVOC, Vol 2008, Iss 16, Pp 288-301 (2008)
Externí odkaz:
https://doaj.org/article/e441ee187ddd41f9ac3e4825e4a41ca2
Publikováno v:
ARKIVOC, Vol 2006, Iss 15, Pp 133-141 (2007)
Externí odkaz:
https://doaj.org/article/6076fd8db8d2498684a45d1618491352
Autor:
Derong Cao, Herbert Meier
Publikováno v:
Chinese Chemical Letters. 30:1758-1766
Fluorescent chemosensors based on pillararene complexes represent a new, promising branch in sensor technology. Because of CH⋅⋅⋅π interactions, aliphatic chains are well suited for the columnar cavities of pillararenes and bulky or sheet-like
Autor:
Chaoqiang Liao, Derong Cao, Tao Hua, Hanlun Wu, Lingyun Wang, Herbert Meier, Zu-Sheng Huang, Hao Tang
Publikováno v:
Dyes and Pigments. 165:103-111
Four novel metal-free organic dyes WL1a-b and WL2a-b containing di(1-benzothieno)[3,2-b:2′,3′-d]pyrrole (DBTP) as electron donor were synthesized and applied for dye-sensitized solar cells (DSSCs), where DBTP was firstly employed as a donor in th