Te-1-Acylmethyl and Te-1-Iminoalkyl Telluroesters: Synthesis and Thermolysis Leading to 1,3-Diketones and O-Alkenyl and O-Imino Esters
摘要:
A series of Te-1-acylmethyl carbotelluroates was prepared in good isolated yields from the reaction of potassium carbotelluroates with -haloketones in acetonitrile. Thermolysis of the telluroesters afforded vinyl esters in 20-50% yields, while treatment of the carbotellurorates with potassium t-butanolate led to 1,3-diketones in 30-75% yields with the liberation of black tellurium. The reaction of potassium carbotelluroates with -haloaceto oximes gave O-acyl oximes in 50-70% yields via Te-1-iminomethylcarbotelluroates.
PHASE DIFFERENCE FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:Konica Minolta, Inc.
公开号:US20140326930A1
公开(公告)日:2014-11-06
The purpose of the present invention is to provide a cellulose acetate film having excellent adhesion to a polarizer, and in which there is minimal change in retardation with respect to residual solvent during film stretching. This phase difference film contains cellulose acetate α having a degree of acetyl substitution of 2.1 or less, cellulose acetate β having a degree of acetyl substitution of 2.3-2.5, and a compound having a van der Waals volume of 500 Å
3
to 1000 Å
3
in the amount of 5-10 mass % with respect to the total amount of the cellulose acetate α and the cellulose acetate β, and the phase difference film is stretched.