Synthesis and some properties of dyes containing the pyrano[2,3-d]-pyrimidine nucleus
作者:Joseph Bailey、John A. Elvidge
DOI:10.1039/p19730000823
日期:——
The condensation of 1,3-dialkylbarbituric acids with ethyl orthoacetate gives 7H-pyrano[2,3-d]pyrimidines. The structures of these dyes were confirmed by their reactions. The preparation and light absorptions of several non-ionic trinuclear dyes containing the pyrano[2,3-d]pyrimidine nucleus are discussed.
1,3-二烷基巴比妥酸与原乙酸乙酯的缩合得到7 H-吡喃并[2,3- d ]嘧啶。这些染料的结构通过它们的反应得以证实。讨论了几种含有吡喃并[2,3- d ]嘧啶核的非离子型三核染料的制备和吸光度。
Novel polymethine dyes and UV absorbers and imaging materials for their use
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0297871A2
公开(公告)日:1989-01-04
Polymethine dyes and ultraviolet absorbers are disclosed containing a basic electron donating terminal nucleus and an acidic electron accepting terminal nucleus comprised of a triarylborylisocyano group. The dyes are useful in imaging materials.
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0297873A2
公开(公告)日:1989-01-04
Polymethine dyes are disclosed containing an acidic electron accepting terminal nucleus comprised of an isocyano group. The dyes are useful as spectral sensitizers in ultraviolet responsive imaging compositions.