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 PROPANE-1-PHOSPHONIC ACID
4672-38-2

PROPANE-1-PHOSPHONIC ACID synthesis

1synthesis methods
-

Yield:4672-38-2 88%

Reaction Conditions:

with hydrogenchloride in water for 8 h;Reflux;

Steps:

Representative procedures are described
Propylphosphonic acid (3).22 Method A. A mixture of 20.00 g(0.11 mol) of diethyl propylphosphonate (6) and 100 ml of concentratedHCl was heated under reflux for 8 h. Next, one half ofthe volume of acid was removed by atmospheric distillation andthe remainder was evaporated to the dryness under reducedpressure on a rotary evaporator. The crude solid was trituratedwith hexane and filtered to yield 12.1 g (88%) of propylphosphonicacid (3) as off-white crystals.

References:

Pizova, Hana;Bobal, Pavel [Tetrahedron Letters,2015,vol. 56,# 15,art. no. 45996,p. 2014 - 2017]

FullText

PROPANE-1-PHOSPHONIC ACID Related Search: