RECORDING MATERIAL PRODUCED USING NON-PHENOL COMPOUND
申请人:NIPPON SODA CO., LTD.
公开号:US20150284321A1
公开(公告)日:2015-10-08
An object of the present invention is to provide a recording material or a recording sheet using, as a color-developing agent, a non-phenol compound that is a safe compound in no danger of corresponding to an endocrine disruptor and is good in color developing performance. The non-phenol compound used in the present invention is at least one selected from the group consisting of compounds represented by the following formulas (I) to (III).
Nickel Hydride Catalyzed Cleavage of Allyl Ethers Induced by Isomerization
作者:Andreas Berkefeld、Ivana Fleischer、Prasad M. Kathe
DOI:10.1055/s-0040-1706683
日期:2021.10
This report discloses the deallylation of O- and N-allyl functional groups by using a combination of a Ni-H precatalyst and excess Brønsted acid. Key steps are the isomerization of the O- or N-allyl group through Ni-catalyzed double-bond migration followed by Brønsted acid induced O/N–C bond hydrolysis. A variety of functional groups are tolerated in this protocol, highlighting its synthetic value
Silicon‐Free SuFEx Reactions of Sulfonimidoyl Fluorides: Scope, Enantioselectivity, and Mechanism
作者:Dong‐Dong Liang、Dieuwertje E. Streefkerk、Daan Jordaan、Jorden Wagemakers、Jacob Baggerman、Han Zuilhof
DOI:10.1002/anie.201915519
日期:2020.5.4
SuFEx reactions, in which an S-F moiety reacts with a silyl-protected phenol, have been developed as powerful click reactions. In the current paper we open up the potential of SuFEx reactions as enantioselective reactions, analyze the role of Si and outline the mechanism of this reaction. As a result, fast, high-yielding, "Si-free" and enantiospecific SuFEx reactions of sulfonimidoyl fluorides have
N,N'-DIARYLUREA DERIVATIVE, MANUFACTURING METHOD THEREOF, AND THERMOSENSITIVE RECORDING MATERIAL USING SAME
申请人:SANKO CO., LTD.
公开号:US20210340099A1
公开(公告)日:2021-11-04
The present invention relates to an N,N′-diurea derivative represented by the following general formula (1) and a method for producing the same. In addition, the present invention relates to a thermosensitive recording material in which a thermosensitive recording layer including a basic dye which is colorless or lightly colored at room temperature and a developer capable of developing color upon contact with the basic dye by heating is provided on a base sheet, wherein the developer is the N,N′-diurea derivative represented by the following general formula (1):
(wherein R2 is an alkyl group, an aralkyl group, or an aryl group; and A
1
is a hydrogen atom or an alkyl group).
Thermosensitive recording material and color developer compound therefor
申请人:——
公开号:US20040071187A1
公开(公告)日:2004-04-15
A thermosensitive recording material has a support and a thermosensitive coloring layer formed thereon containing a leuco dye and a color developer capable of inducing color formation in the leuco dye upon application of heat thereto, with the color developer including at least one compound (A) having in a molecule thereof at least two aromatic ring moieties with specific structures, selected from the group consisting of an aromatic ring moiety having at least one carboxyl group and electron-attracting functional group, an aromatic ring moiety having at least one carboxyl group and electron-donating functional group, and an aromatic ring moiety having at least one carboxyl group, free of the electron-attracting and electron-donating functional groups. An aromatic carboxylic acid compound serving as the above-mentioned compound (A) and the producing method thereof are also disclosed.