Matoba, Katsuhide; Yamazaki, Takao, Chemical and pharmaceutical bulletin, 1983, vol. 31, # 8, p. 2955 - 2956
作者:Matoba, Katsuhide、Yamazaki, Takao
DOI:——
日期:——
Non-linear opticaly active molecules, their synthesis, and use
申请人:McGinniss Vincent D.
公开号:US20120059163A1
公开(公告)日:2012-03-08
In one aspect, the present invention provides a hyperpolarizable organic chromophore. The chromophore is a nonlinear optically active compound that includes a π-donor conjugated to a π-acceptor through a π-electron conjugated bridge. In other aspects of the invention, donor structures and acceptor structures are provided. In another aspect of the invention, a chromophore-containing polymer is provided. In one embodiment, the chromophore is physically incorporated into the polymer to provide a composite. In another embodiment, the chromophore is covalently bonded to the polymer, either as a side chain polymer or through crosslinking into the polymer. In other aspects, the present invention also provides a method for making the chromophore, a method for making the chromophore-containing polymer, and methods for using the chromophore and chromophore-containing polymer.
An Efficient Method for Generation of α-Oxoketenes: Cycloreversion of Enolized Meldrum's Acid Derivatives
作者:Masayuki Sato、Hitoshi Ban、Chikara Kaneko
DOI:10.1016/s0040-4039(97)01566-9
日期:1997.9
synthesized from Meldrum'sacids. These dioxinones underwent 4+2 cycloreversion to methoxy- or siloxycarbonylketenes and ketones quantitatively at 20–50 °C. The ketenes were characterized by IR spectroscopy as well as by trapping with t-butanol. The ready cycloreversion of these enolized Meldrum'sacid derivatives strongly indicates that the anomalouslyhigh susceptibility of Meldrum'sacids to nucleophilic