Aliphatic and aromatic acetals are easily and efficiently converted to the corresponding nitriles by reaction with hydroxylamine hydrochloride in refluxing absolute ethanol.
脂肪族和芳香族缩醛在回流的无水乙醇中,可通过与盐酸羟胺反应,容易且高效地转化为相应的腈类化合物。
An Efficient Procedure for the Preparation of Cyclic Ketals and Thioketals Catalyzed by Zirconium Sulfophenyl Phosphonate
A convenient method for the preparation of cyclic ketals and thioketals using zirconium sulfophenyl phosphonate as catalyst is described.
描述了一种使用磺基酚磷酸锆作为催化剂制备环酮和硫酮的便利方法。
An efficient SbCl3-metal system for allylation, reduction and acetalization of aldehydes
作者:- Bo Wang Wei、Shi Li-Lan、Huang Yao-Zeng
DOI:10.1016/s0040-4020(01)85467-3
日期:1990.1
allylatlon of aldehydes with allylic halides at room temperature to give high yields of the corresponding homoallylic alcohols with high regio- and chemoselectivity. SbCl3-Al or SbCl3-Zn in DMF-H2O was found to be an efficient reduction system for conversion of aldehydes to alcohols at room temperature in excellent yields. While alcohol was used as solvent instead of DMF-H2o, the acetalization product was
Co-catalysis of a bi-functional ligand containing phosphine and Lewis acidic phosphonium for hydroformylation–acetalization of olefins
作者:Yong-Qi Li、Peng Wang、Huan Liu、Yong Lu、Xiao-Li Zhao、Ye Liu
DOI:10.1039/c5gc02127h
日期:——
L2 containing a phosphine and a Lewis acidic phosphonium exhibited synergetic catalysis and sequential catalysis for one-pot hydroformylation–acetalization.
L2 包含一种膦和一种路易斯酸性磷酸铵,展示了协同催化和顺序催化,用于一锅法羰基化-缩醛化。
Synthesis of <i>gem</i>-Difluoroalkenes via Nickel-Catalyzed Reductive C–F and C–O Bond Cleavage
作者:Zhiyang Lin、Yun Lan、Chuan Wang
DOI:10.1021/acscatal.8b04348
日期:2019.1.4
By merging C–O and C–F bondcleavage in cross-electrophile coupling, we developed a method for efficient synthesis of gem-difluoroalkenes with an alkoxy-substituent on the homoallylic position using easily accessible acetals as coupling partners with α-trifluoromethyl alkenes. Remarkably, this Ni-catalyzed allylic defluorinative cross-coupling reaction demonstrates high tolerance of a wide range of