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 TRIETHYL 3-PHOSPHONOPROPIONATE
3699-67-0

TRIETHYL 3-PHOSPHONOPROPIONATE synthesis

10synthesis methods
-

Yield:3699-67-0 93%

Reaction Conditions:

with triethyl phosphite

Steps:

1 EXAMPLE 1

EXAMPLE 1 Triethyl Phosphonopropionate: Ethyl bromopropionate (92 g 0.5 mole) and triethyl phosphite (83 g, 0.5 mole) were stirred and heated to about 200° C. under a air cooled reflux condenser. The ethyl bromide that was evolved was collected with the aid of a cooling trap. After 1 hour of heating the pot temperature went up to 230° C. At this point the evolution of ethyl bromide ceased. The yellow oil was cooled to room temperature (RT) and then distilled under vacuum. There was obtained 112 g of phosphonate (93%) boiling at 105° /20 mm Hg as a colorless oil.

References:

US5162566,1992,A

TRIETHYL 3-PHOSPHONOPROPIONATE Related Search:

措勤县| 芷江| 大新县| 奇台县| 思南县| 疏附县| 资源县| 鹰潭市| 西昌市| 于田县| 孟村| 晋江市| 临颍县| 栾川县| 夏河县| 家居| 汉沽区| 翼城县| 三亚市| 兰坪| 固阳县| 西乌| 武平县| 鲁甸县| 塔河县| 垣曲县| 双牌县| 托克托县| 通许县| 崇明县| 鄂托克旗| 广东省| 玉门市| 吴川市| 双流县| 乳山市| 巨野县| 黄浦区| 阿拉尔市| 田东县| 漳州市|