天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
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: