一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Dimethyl dicarbonate
4525-33-1

Dimethyl dicarbonate synthesis

2synthesis methods
-

Yield:4525-33-1 91%

Reaction Conditions:

with sodium hydroxide;triisooctyl amine in water;toluene at 17; for 1.25 h;Product distribution / selectivity;

Steps:

3

473 g of 12.1% sodium hydroxide solution were pumped within 45 minutes into a mixture of 1.15 g of triisooctylamine, 180 ml of toluene and 156.9 g of methyl chloroformate, in such a way that it was possible to keep the temperature at approx. 17 C. with cooling. The mixture was stirred for a further 30 minutes and the phases were subsequently separated. 86.7 g of dimethyl dicarbonate (91% of theory) and 5.3 g of methyl chloroformate were present in the organic phase.

References:

US2007/213552,2007,A1 Location in patent:Page/Page column 2

Dimethyl dicarbonate Related Search:

育儿| 西宁市| 淳安县| 乾安县| 吉安市| 修文县| 南岸区| 平凉市| 东海县| 金寨县| 昌黎县| 鹰潭市| 任丘市| 新郑市| 尚义县| 扎赉特旗| 盐源县| 洞头县| 崇义县| 北流市| 普兰县| 平山县| 陵川县| 巴里| 岳西县| 淮南市| 奉化市| 平阳县| 平遥县| 商南县| 呼玛县| 保定市| 蒙自县| 章丘市| 彰化市| 绵竹市| 商丘市| 四子王旗| 珲春市| 赤峰市| 于田县|