64287-26-9Relevant academic research and scientific papers
Photobleachable cinnamoyl dyes for radical visible photoinitiators
Li, Zhen,Liao, Qiuyan,Liao, Wen,Tang, Hongding,Wu, Xiang,Xiong, Ying,Xu, Can
, (2020)
Three new photobleachable cinnamoyl dyes for radical visible photoinitiators (CAs) were prepared by aldol condensation reaction of 2, 4-bis(diethylamino) benzaldehyde and esters (including ethyl acetate, diethyl malonate and ditertbutyl malonate), in comp
Palladium-catalyzed amination of aryl dibromides with secondary amines: Synthetic and mechanistic aspects
Beletskaya, Irina P.,Bessmertnykh, Alla G.,Guilard, Roger
, p. 6393 - 6397 (2007/10/03)
Diaminobenzenes are obtained starting from m- and p-dibromobenzenes and secondary amines in the presence of Pd(dba)2/P(o-tolyl)3 and sodium tert- butoxide in moderate to good yields. Reductive dehalogenation of aryl dibromides is a major side reaction under these conditions. The study of this reaction has shown that the formation of reductive dehalogenation products occurs according to two independent ways. The first one proceeds via the well-known β-hydride elimination from amido-coordinated palladium complexes. The second one involves the formation of hydrido palladium complexes from amino-coordinated derivatives. Although our results do not allow us to propose a detailed mechanistic scheme, they clearly show that the deprotonation step of the catalytic amination cycle has a major effect on the amine/arene ratio.
Indolyl phthalide compounds
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, (2008/06/13)
3-Aryl-3-indolylphthalides, 3-aryl-3-pyrrolylphthalides and 3-aryl-3-carbazolylphthalides prepared by interaction of the appropriate 2-(heteroaryl)carbonylbenzoic acid and the appropriate phenylamine, and 3,3-bis(indolyl)phthalides prepared by the interaction of the appropriate 2-(indolyl)carbonylbenzoic acid and the appropriate indole are useful as color formers in pressure-sensitive carbonless duplicating systems, thermal marking systems and hectographic copying systems.
Heteroarylphthalides
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, (2008/06/13)
3-Aryl-3-indolylphthalides, 3-aryl-3-pyrrolylphthalides and 3-aryl-3-carbazolylphthalides prepared by interaction of the appropriate 2-(heteroaryl)carbonylbenzoic acid and the appropriate phenylamine, and 3,3-bis(indolyl)-phthalides prepared by the interaction of the appropriate 2-(indolyl)carbonylbenzoic acid and the appropriate indole are useful as color formers in pressure-sensitive carbonless duplicating systems, thermal marking systems and hectographic copying systems.
Phthalide compounds, processes and marking systems
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, (2008/06/13)
3-Aryl-3-indolylphthalides, 3-aryl-3-pyrrolylphthalides and 3-aryl-3-carbazolylphthalides prepared by interaction of the appropriate 2-(heteroaryl)carbonylbenzoic acid and the appropriate phenylamine, and 3,3-bis(indolyl)phthalides prepared by the interaction of the appropriate 2-(indolyl)carbonylbenzoic acid and the appropriate indole are useful as color formers in pressure-sensitive carbonless duplicating systems, thermal marking systems and hectographic copying systems.
