Toward a Synthetically Useful Stereoselective C−H Amination of Hydrocarbons
作者:Chungen Liang、Florence Collet、Fabien Robert-Peillard、Paul Müller、Robert H. Dodd、Philippe Dauban
DOI:10.1021/ja076519d
日期:2008.1.1
Reaction between a sulfur(VI) compound and an iodine(III) oxidant in the presence of a catalytic quantity (<=3 mol %) of a rhodium(II) catalyst leads to the formation of a chiral metallanitrene of unprecedented reactivity. The latter allows intermolecular C-Hamination to proceed in very high yields up to 92% and excellent diastereoselectivities up to 99% with C-H bond containing starting materials
catalyzes the aziridinationreactions of enol silyl ethers with tosylimino(iodo)benzene (PhINTs) in acetonitrile to give α-N-tosylamido ketones by subsequent aziridine ring opening. Olefins are converted into aziridines by 5 mol% of this catalyst system. Both reactions afford the corresponding products in moderate to good yields. In the presence of chiral ligands asymmetric aziridinations have been achieved
The intermolecular rhodium(II)‐catalyzed C(sp3)–H amination of enamides gives access to new 4‐aminopiperidine derivatives that are useful building blocks in medicinal chemistry. This efficient transformation proceeds at room temperature with complete regio‐ and chemoselectivity in favor of the allylic C(sp3)–H bond, and has a broad functional group tolerance. In addition, the matched combination of
分子间的铑(II)催化的酰胺的C(sp 3)-H胺化作用使人们能够获得新的4-氨基哌啶衍生物,这些衍生物在药物化学中是有用的。这种有效的转变在室温下进行,具有完全的区域选择性和化学选择性,有利于烯丙基C(sp 3)–H键,并且具有宽泛的官能团耐受性。此外,手性配合物Rh 2(S- nta)4 [ nta =(S)-N -1,8-萘甲丙氨酸]与光学纯的(S)-磺酰亚胺酰胺的匹配组合可分离出具有优异性能的烯丙基胺。立体声控制。
<b>Copper-Mediated Cross-Coupling Reaction of N-Protected Sulfonimidamides and Aryl Halides</b>
作者:Carsten Bolm、Christin Worch
DOI:10.1055/s-2008-1032139
日期:2008.3
Copper-mediated cross-coupling reactions of N-protected sulfonimidamides with aryl iodides and aryl bromides provide N-protected N′-aryl sulfonimidamides in moderate to good yields.
Synthesis of Enantioenriched Primary <i>tert</i>-Butanesulfonimidamides via Imination–Hydrazinolysis of <i>N</i>′-<i>tert</i>-Butanesulfinyl Amidines
作者:Jie Feng、Hui Liu、Yun Yao、Chong-Dao Lu
DOI:10.1021/acs.joc.2c00095
日期:2022.4.1
imination/N-functionalization) of enantioenriched N′-tert-butanesulfinyl amidines, followed by hydrazinolysis. N′-Sulfinyl amidines served as imination precursors during copper-catalyzed sulfonyl nitrene transfer or iodonitrene-based NH transfer. Further transformations allowed access to primary tert-butanesulfonimidamides with diverse substitutions on the nitrogen of S═N.