A novel method of preparing pyrazolo[1,5-a][1,3,5]triazin-4(3H)-one derivatives((9a~9c)) has been developed by cyclization of amidine pyrazol intermediates with triphosgene at low temperature.
设计并实现了以具有脒代吡唑结构的中间体与三聚光气在低温下进行分子内环合得到吡唑并三嗪[1,5-a][1,3,5]-4(3H)-酮衍生物(9a~9c)的新方法。
a - (2 - Thiazolylureido) - alkylphosphonk: aeid diphenyl esters (3) were synthesized by the reaction of (substituted) 2 - arnino(benzo)thiazole with a - isocyanatoalkylphosphonic acid diphenyl esters (2 ) , which were prepared in one - pot by treating a - aminoalkylphosphonie acid diphenyl esters(l) with triphosgene.
在二氯甲烷中,三乙胺为缚酸剂的条件下,α-氨基膦酸二苯酯与三聚光气反应形成α-异氰酸基膦酸酯2,2不经分离,直接与2-氨基(苯并)噻唑加成得到α-(2-噻唑基脲基)膦酸二苯酯3,产率55。
Convergent Beam Propagation in Simulative Cylindrical Bio-tissue;
会聚光在柱状模拟生物组织中的实验研究
For detecting wavefronts from the system with long optical path or multi-component lens with one by one aligning,the phase-shifting lateral shearing interferometry of convergent beam with the convergent beam as light source for interferometry is proposed,which is based on Michelson interferometer.
为了检测长光程情况或多组分光学镜头逐片装校中的波面,提出一种以会聚光波直接作为干涉测试光源的会聚光移相剪切干涉方法,阐述了基于迈克耳孙干涉仪原理的会聚光横向剪切干涉光路,建立了会聚光横向剪切波面的数学表达式,并与一般横向剪切干涉相比较,分析了剪切量和波面偏移量的特征,且引入移相干涉技术求取剪切波面。
Application progress of Ⅲ-Ⅴ high efficiency terrestrial triple-junction concentration photovoltaic;
Ⅲ-Ⅴ高效三结电池聚光光伏应用进展