B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Highly Chemoselective Reduction of Isatins: Synthesis of Indolin-3-ones and Indolines
作者:Hyojin Jeong、Nara Han、Dong Wook Hwang、Haye Min Ko
DOI:10.1021/acs.orglett.0c03150
日期:2020.10.16
A chemo- and site-selective reduction reaction of isatin derivatives using catalystB(C6F5)3 and hydrosilanes is described. This transformation is operationally simple, proceeds under mild conditions, and is resistant to various functional groups. Thus, this efficient reaction using a combination of B(C6F5)3 and BnMe2SiH or B(C6F5)3 and Et2SiH2 could potentially be utilized to produce various indolin-3-ones
描述了使用催化剂B(C 6 F 5)3和氢硅烷的靛红衍生物的化学和位置选择性还原反应。该转化操作简单,在温和条件下进行,并且抗各种官能团。因此,结合使用B(C 6 F 5)3和BnMe 2 SiH或B(C 6 F 5)3和Et 2 SiH 2的有效反应可以潜在地用于生产各种吲哚3-3-酮和二氢吲哚。无需多步程序和金属催化条件。
Palladium-Catalyzed Intramolecular Reductive Cross-Coupling of Csp<sup>2</sup>Csp<sup>3</sup>Bond Formation
A Pd‐catalyzed efficient reductive cross‐coupling reaction without metallic reductant to construct a Csp2Csp3 bond has been reported. A PdIV complex was proposed to be a key intermediate, which subsequently went through double oxidative addition and double reductive elimination to produce the cross‐coupling products by involving Pd0/II/IV in one transformation. The oxidative addition from PdII to
Rearrangement of Indolinesulfonamides to Sulfones Using Polyphosphoric Acid (PPA)
作者:Brian Raszka、James McKee、Murray Zanger
DOI:10.1080/00397910903161868
日期:2010.5.19
Unlike other N-alkylsulfonanilides, indolinesulfonamides hydrolyze in 98% sulfuric acid. Recent work in this laboratory has shown that rearrangement can be achieved by using polyphosphoricacid. A series of substituted indolinesulfonamides has been prepared and rearranged to their corresponding indoline arylsulfones.