Aluminum propoxide for the Tishchenko condensation of propanal to propyl propionate is prepared from aluminum powder and propanol.
以合成


铝为催化剂,无水氯化锌为助催化剂,用
醛一步合成了
酸
,收率可达92%,选择性可达93%。
Aluminum propoxide for the Tishchenko condensation of propanal to propyl propionate is prepared from aluminum powder and propanol.
以合成


铝为催化剂,无水氯化锌为助催化剂,用
醛一步合成了
酸
,收率可达92%,选择性可达93%。
The isopropyl chloracetate was synthesized by esterification of chloracetic acid with isopropyl alcohol using aluminium phosphotungstate as catalyst.
以氯乙酸和异
为原料,磷钨酸铝作催化剂进行
化反应,合成氯乙酸异
。
This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.
本文以维
素B6氯化氢盐、焦谷氨酸和异
为原料,固相合成美他多辛,纯度达96.3%。
A new path for the preparation of leaf alcohol with 3-chloropropanol, triphenylphosphine and propionaldehyde through Wittig reaction was studied.
本文研究了以3-氯
,三苯基膦和
醛为原料利用威蒂希反应合成叶
新路线。
Isopropyl cinnamylate was synthesized by the esterifiestion of isopropyl alcohol with cinnamic acid in the presence of potassium bisulfate monohydrate.
用硫酸氢钾催化肉桂酸与异


化反应,合成了肉桂酸异
。
The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.
以异
为溶剂,壬
为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中
游离乙酸,乙酸测定结果
相对标准偏差小于1%,平均回收率为99。
Two kinds of products can be obtained in the addition reaction of benzaldoxime with propinol, in which 3-hydroxymethyl-dihydroisoxazol is the main product when reaction equilibrium is reached.
炔

两种取向对应着加成反应
两种产物,反应达到平衡后,3-羟甲基二氢异恶唑为主要产物。
声明:以上例句、词性分类均由互联网资源自动
成,部分未经过人工审核,其表达内容亦不代表本软件
观点;若发现问题,欢迎向我们指正。