期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
电子合成器的使用(上)
1
作者 韩延鹏 《音响技术》 1995年第5期4-6,共3页
关键词 选择合成器 接收通道 力度曲线 音色变化 程序变化 MIDI系统 键盘 控制改变 控制功能 数据输入
原文传递
Cleaner and convenient preparation of 3-(4,6-dimethoxy-pyrimidin-2-yloxy)-2-methyl-phenol 被引量:1
2
作者 文岳中 方兆华 刘维屏 《Journal of Zhejiang University Science》 EI CSCD 2004年第8期956-959,共4页
Environmental concerns have highlighted the need of cleaner technologies. A cleaner, convenient and selective technology has been developed for the preparation of 3-(4,6-dimethoxy-pyrimidin-2-yloxy)-2-methyl-phenol (... Environmental concerns have highlighted the need of cleaner technologies. A cleaner, convenient and selective technology has been developed for the preparation of 3-(4,6-dimethoxy-pyrimidin-2-yloxy)-2-methyl-phenol (DPMP) from 2-methyl-benzene-1,3-diol in water as solvent. The isolated yield of DPMP is up to 86% in good selectivity. The product structure was characterized by conventional methods, H-NMR and MS. This technology belongs to the modern concept of 1 environmentally friendly low wastes or non-wastes technology (LWNWT). 展开更多
关键词 Cleaner preparation Greener technology Selective synthesis 2-methyl-benzene-1 3-diol 3-(4 6-dimeth- oxy-pyrimidin-2-yloxy)-2-methyl-phenol
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部