The intermolecular C-H cross-coupling between aromatic ethers has been achieved for the first time using perfluorinated hypervalent iodine(III) compounds as extreme single-electron-transfer (SET) oxidants. The demonstrations of this specific coupling could provide a direct route to valuable oxygenated mixed naphthalene-benzene biaryls 3 only, without formation of other biaryl-derived byproducts.
Novel compound for color-producing composition, and recording material
申请人:——
公开号:US20010044553A1
公开(公告)日:2001-11-22
A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula:
10≧(
A+B
)≧3
wherein each of A and B is an integer of 1 or more.
NOVEL COMPOUND FOR COLOR-PRODUCING COMPOSITION, AND RECORDING MATERIAL
申请人:KABASHIMA Kazuo
公开号:US20100105941A1
公开(公告)日:2010-04-29
A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula:
10≧(
A+B
)≧3
wherein each of A and B is an integer of 1 or more.
NOVEL COLOR-DEVELOPING COMPOUND AND RECORDING MATERIAL
申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP1116713A1
公开(公告)日:2001-07-18
A urea-urethane compound having one or more urea groups and one or more urethane groups in the molecular structure, the number of said urea groups (A) and the number of said urethane groups (B) satisfying the following numerical formula:
10 ≧ (A + B) ≧ 3
wherein each of A and B is an integer of 1 or more.
一种脲-氨基甲酸酯化合物,其分子结构中含有一个或多个脲基团和一个或多个氨基甲酸酯基团,所述脲基团(A)的数目和所述氨基甲酸酯基团(B)的数目满足以下数值公式:
10 ≧ (A + B) ≧ 3
其中 A 和 B 均为 1 或 1 以上的整数。
NOVEL COLOR FORMER AND RECORDING MATERIAL
申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP1260498A1
公开(公告)日:2002-11-27
A color-producing composition comprising a developer comprising a urea-urethane compound, and a colorless or light-colored leuco dye.
一种制色组合物,包括一种由尿素-氨基甲酸酯化合物组成的显影剂和一种无色或浅色的染料。
DEVELOPER FOR RECORDING MATERIALS
申请人:Asahi Kasei Chemicals Corporation
公开号:EP1637337A1
公开(公告)日:2006-03-22
A developer which contains a triphenolic compound (B) being a triphenolic compound (A) of the general formula (1) satisfying the requirements: (a) an OH group is present at one or more of 4- and 4'-positions of the left and right aromatic rings and (b) at least one of the substituents adjacent to at least one OH group on the left or right aromatic rings is hydrogen and which exhibits high sensitivity and image stability of images and less fog in non-image areas; and color forming materials and thermal recording materials made by using the same.