[EN] USE OF THIAZOLYL-PYRIDINIUM BASED DYES IN OPTICAL LAYERS FOR OPTICAL DATA RECORDING [FR] UTILISATION DE COLORANTS THIAZOLYL-PYRIDINIUM DANS DES COUCHES OPTIQUES POUR L'ENREGISTREMENT OPTIQUE DE DONNEES
Nitro-Methyl Redox Coupling: Efficient Approach to 2-Hetarylbenzothiazoles from 2-Halonitroarene, Methylhetarene, and Elemental Sulfur
摘要:
A simple, straightforward, and atom economic approach to 2-hetarylbenzothiazoles starting from 2-halonitroarene, methylhetarene, and elemental sulfur under mild conditions is described. The method is highlighted by the direct redox nitro-methyl reaction for carbon-nitrogen bond formation without an added oxidizing or reducing agent.
Use Of Thiazolyl-Pyridinium Based Dyes In Optical Layers For Optical Data Recording
申请人:Weiss Andre
公开号:US20080108799A1
公开(公告)日:2008-05-08
The present invention relates to the use of thiazolyl-pyridinium based dyes in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 mn.
The invention further relates to a write only read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs a thiazolyl-pyridinium based type dye in the optical layer.
The present invention further relates to new thiazolyl-pyridinium based dyes, of formula (V), (VI) or (VIII).
Use of thiazolyl-pyridinium based dyes in optical layers for optical data recording
申请人:Clariant Finance (BVI) Limited
公开号:US07655767B2
公开(公告)日:2010-02-02
The present invention relates to the use of thiazolyl-pyridinium based dyes in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm.
The invention further relates to a write only read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs a thiazolyl-pyridinium based type dye in the optical layer.
The present invention further relates to new thiazolyl-pyridinium based dyes, of formula (V), (VI) or (VIII).
Suzuki-Miyaura coupling reactions of 2,6-dichlorobenzothiazole with arylboronic acids, promoted by microwave heating, efficiently produce 2-aryl-6-chlorobenzothiazoles in a highly regioselective manner. This process serves as the foundation for a simple method to rapidly construct 2-aryl-6-chlorobenzothiazole libraries. (c) 2006 Elsevier Ltd. All rights reserved.
USE OF THIAZOLYL-PYRIDINIUM DYES FOR OPTICAL DATA RECORDING