Synthesis and Structural Properties of Cyclophanes Containing Thiophene Rings in the Side-chain
摘要:
The synthesis of some cyclophanes bearing in the linear side-chain carbon-carbon triple bonds conjugated with thiophene rings has been reported. Structure analysis of the products based on extensive NMR investigation is presented. UV-Vis absorption spectra and fluorescence spectra have been measured. The analysis of the spectra points out a correlation between the maxima and the structure of the side-chain. The replacement of a benzene ring with a thiophene ring causes a bathochromic shift when the benzene ring close to the paracyclophane moiety is replaced.
Synthesis and Structural Properties of Cyclophanes Containing Thiophene Rings in the Side-chain
摘要:
The synthesis of some cyclophanes bearing in the linear side-chain carbon-carbon triple bonds conjugated with thiophene rings has been reported. Structure analysis of the products based on extensive NMR investigation is presented. UV-Vis absorption spectra and fluorescence spectra have been measured. The analysis of the spectra points out a correlation between the maxima and the structure of the side-chain. The replacement of a benzene ring with a thiophene ring causes a bathochromic shift when the benzene ring close to the paracyclophane moiety is replaced.
The object of the invention is new complexes of derivatives of thiacalix[4]arenes having the formula:
1
R
1a
, R
2a
, R
3a
, R
4a
, R
1b
, R
2b
, R
3b
et R
4b
are such as defined in claim 1 and their utilization, especially for manufacturing of materials having optical limiter properties.
Palladium-Catalyzed Oxidative Cross-Coupling between Heterocycles and Terminal Alkynes with Low Catalyst Loading
作者:Xiaoming Jie、Yaping Shang、Peng Hu、Weiping Su
DOI:10.1002/anie.201210013
日期:2013.3.25
Direct: With [Pd2(dba)3] as a catalyst, the direct alkynylation of thiophenes bearing a variety of substituents has been accomplished by using terminal alkynes as alkynylating reagents. This protocol is also applicable to other electron‐rich aromatic heterocycles. dba=dibenzylidenacetone.
[EN] METALLIC THIACALIX[4]ARENE COMPLEXES<br/>[FR] COMPLEXES METALLIQUES DE THIACALIX(4)ARENES
申请人:UNIV CLAUDE BERNARD LYON
公开号:WO2002068521A1
公开(公告)日:2002-09-06
L'invention a pour objet des nouveaux complexes de dérivés de thiacalix[4]arènes de formule: (I), dans laquelle R1a, R2a, R3a, R4a, R1b, R2b, R3b et R4b sont tels que définis à la revendication 1 et leur utilisation, notamment pour la fabrication de matériaux présentant des propriétés de limiteurs optiques.