研究了带有三卤代乙酰氧基的酮酰基的形成及其通过氟离子的亲核双键分解。环己酮用三氟乙酸酐进行反应而无需催化剂,得到宝石经由一致双分子反应-bistrifluoroacetates。在温和的条件下用氟化氢处理有效地产生了相应的宝石-二氟化物。在该反应过程中,回收三氟乙酸,并使用P 2 O 5转化为三氟乙酸酐。由于宝石二氟化物衍生自酮,HF和P 2 O 5,因此构成了宝石二氟化物的实用合成。
Novel cyclohexylmethyl compounds corresponding to formula I
wherein R
1
, R
2
, R
3
, R
4
and R
5
, have the meanings given in the description. Pharmaceutical formulations containing these compounds, as well as a processes for preparing these compounds and related methods of treatment are also provided.
Layered zirconium sulfophenyl phosphonate was found to be an efficient heterogeneous catalyst for the preparation and deprotection of 1,1-diacetates. (C) 2002 Elsevier Science Ltd. All rights reserved.
Sun, Peipei; Hu, Zhixin, Journal of Chemical Research, 2005, # 10, p. 659 - 660
作者:Sun, Peipei、Hu, Zhixin
DOI:——
日期:——
Matschinskaja, Zhurnal Obshchei Khimii, 1952, vol. 22, p. 1159,1162; engl. Ausg. S. 1205