Preparation of Newtert-Butyl Substituted Coumarins, Thiocoumarins and Dithiocoumarins
摘要:
6-tert-Butyl-4-methyl- and 6,8-di-tert-butyl-4-methylcoumarin were prepared from tert-butylphenols and diketene via the corresponding aryl acetoacetates. 6-tertButyl-4-methyl-thiocoumarin (6) was obtained from 6-tert-butylthiophenol. Thionation with LAWESSON's or DAVY's reagent led to the related thion- and dithiocoumarins. The structures were proved by NMR spectroscopy and an X-ray structure analysis of 6.
Preparation of Newtert-Butyl Substituted Coumarins, Thiocoumarins and Dithiocoumarins
摘要:
6-tert-Butyl-4-methyl- and 6,8-di-tert-butyl-4-methylcoumarin were prepared from tert-butylphenols and diketene via the corresponding aryl acetoacetates. 6-tertButyl-4-methyl-thiocoumarin (6) was obtained from 6-tert-butylthiophenol. Thionation with LAWESSON's or DAVY's reagent led to the related thion- and dithiocoumarins. The structures were proved by NMR spectroscopy and an X-ray structure analysis of 6.
Thermal transfer recording material, thermal transfer image receptive sheet, ink sheet, thermal transfer recording method, and metal containing compound
申请人:Konica Minolta Photo Imaging, Inc.
公开号:EP1568680A1
公开(公告)日:2005-08-31
A thermal transfer recording material including a support having thereon a metal containing compound derived from a divalent metal salt and a compound represented by Formula (I), the metal containing compound having a property to form a metal-chelated dye by heating with a metal chelating dye represented by Formulas (1), (2) or (4).
ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
申请人:Murai Shio
公开号:US20130202327A1
公开(公告)日:2013-08-08
Provided is an electrophotographic photosensitive member, including: a support; and a photosensitive layer, which is provided on the support, in which: a surface layer of the electrophotographic photosensitive member includes a terminal siloxane-containing polyester resin having a specific structure; and a lower layer provided in contact with the surface layer includes a polycarbonate resin, a polyester resin, or a polyvinyl acetal resin, having a specific structure.
US8921020B2
申请人:——
公开号:US8921020B2
公开(公告)日:2014-12-30
Preparation of New<i>tert</i>-Butyl Substituted Coumarins, Thiocoumarins and Dithiocoumarins
作者:Jürgen Voss、Ronald Edler、Gunadi Adiwidjaja
DOI:10.1080/10426500701340949
日期:2007.6.14
6-tert-Butyl-4-methyl- and 6,8-di-tert-butyl-4-methylcoumarin were prepared from tert-butylphenols and diketene via the corresponding aryl acetoacetates. 6-tertButyl-4-methyl-thiocoumarin (6) was obtained from 6-tert-butylthiophenol. Thionation with LAWESSON's or DAVY's reagent led to the related thion- and dithiocoumarins. The structures were proved by NMR spectroscopy and an X-ray structure analysis of 6.