Direct Transformation of Methyl Arenes to Aryl Nitriles at Room Temperature
作者:Wang Zhou、Liangren Zhang、Ning Jiao
DOI:10.1002/anie.200903838
日期:2009.9.7
Three CH bonds are cleaved in the direct transformation of methyl arenes to aryl nitriles under mild and neutral conditions (see scheme). This new synthetic tool may not only be used to construct synthetically and medicinally important aryl nitriles, it also achieves CH functionalization under mild conditions. PIDA=phenyliodonium diacetate.
B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Reductive Denitrogenation of Benzonitrile Derivatives
作者:Yi Peng、Martin Oestreich
DOI:10.1021/acs.orglett.2c01003
日期:2022.4.22
B(C6F5)3-catalyzed reductive denitrogenation of aromatic nitriles is reported, achieving the metal-free transformation of a cyano into a methyl group in a single synthetic operation. Tris(phenylsilyl)amine is liberated as the nitrogen-containing byproduct. On the basis of control experiments as well as a nuclearmagneticresonancespectroscopicanalysis, an SN1-type mechanism involving a trisilylammonium
报道了AB(C 6 F 5 ) 3催化芳族腈的还原脱氮,在单一合成操作中实现了氰基到甲基的无金属转化。三(苯基甲硅烷基)胺作为含氮副产物释放。在对照实验和核磁共振光谱分析的基础上,提出了以三甲硅烷基铵离子为关键中间体的S N 1 型机理。
Phase-Transfer Catalyzed <i>O</i>-Silyl Ether Deprotection Mediated by a Cyclopropenium Cation
作者:Roya Mir、Travis Dudding
DOI:10.1021/acs.joc.6b02733
日期:2017.1.6
The use of a cyclopropenium cation as a phase transfer catalyst for O-silyl ether deprotection is reported. Mechanistic insight into this deprotection methodology derived by linear free-energy relationships (LFER), quantum theory of atoms in molecules (QTAIM), and density functional theory (DFT) calculations are also provided.