Aliphatic and aromatic acetals are easily and efficiently converted to the corresponding nitriles by reaction with hydroxylamine hydrochloride in refluxing absolute ethanol.
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.
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