Regioselective Formation of Six- and Seven-Membered Ring by Intramolecular Pd-Catalyzed Amination of <i>N</i>-Allyl-anthranilamides
作者:Egle M. Beccalli、Gianluigi Broggini、Giuseppe Paladino、Andrea Penoni、Caterina Zoni
DOI:10.1021/jo0495135
日期:2004.8.1
4-benzodiazepin-5-ones by Pd(II)-catalyzed intramolecular amination of tosylated N-allyl-anthranilamides is described. Both kinds of products were available in high yields depending on the different reaction conditions.
(Diacyloxyiodo)benzenes-Driven Palladium-Catalyzed Cyclizations of Unsaturated<i>N</i>-Sulfonylamides: Opportunities of Path Selection
作者:Tea Borelli、Stefano Brenna、Gianluigi Broggini、Julie Oble、Giovanni Poli
DOI:10.1002/adsc.201600813
日期:2017.2.20
A study of the palladium(II)‐catalyzed cyclization of unsaturated N‐sulfonylamides was undertaken, using (diacyloxyiodo)benzenes as terminal oxidizing agents. Different reactivities were observed as a function of the nature of the unsaturation (terminal vs. internal), or of the hypervalent iodine compound used (diacetoxyiodobenzene vs. bistrifluoroacetoxyiodobenzene). Proper parameter selection allows
Iodoamination of Alkenyl Sulfonamides by Potassium Iodide and Hydrogen Peroxide in Aqueous Medium
作者:Sabrina Giofrè、Roberto Sala、Egle Maria Beccalli、Leonardo Lo Presti、Gianluigi Broggini
DOI:10.1002/hlca.201900088
日期:2019.7
A procedure for the iodoamination of unfunctionalized olefins tethered to a tosyl‐protected NH‐group has been developed. The combined use of KI and H2O2 in aqueous medium was effective for the preparation of iodomethyl‐substituted nitrogen‐containing heterocycles. The selective exo‐trig iodocyclization provided 1,2‐bifunctional 5‐, 6‐, and 7‐membered cyclic skeletons.
已经开发了一种方法,用于将未官能化的烯烃束缚在甲苯磺酰基保护的NH-基团上进行碘化。在水性介质中联合使用KI和H 2 O 2可以有效地制备碘甲基取代的含氮杂环。选择性的exo-trig碘环化提供了1,2-双功能的5、6和7元环状骨架。
Intramolecular Aminoazidation of Unactivated Terminal Alkenes by Palladium-Catalyzed Reactions with Hydrogen Peroxide as the Oxidant
作者:Francesca Foschi、Camilla Loro、Roberto Sala、Julie Oble、Leonardo Lo Presti、Egle M. Beccalli、Giovanni Poli、Gianluigi Broggini
DOI:10.1021/acs.orglett.0c00010
日期:2020.2.21
The palladium-catalyzed aminoazidation of aminoalkenes yielding azidomethyl-substituted nitrogen-containing heterocycles was developed. The procedure requires oxidative conditions and occurs at room temperature in the presence of hydrogen peroxide and NaN3 as the azide source. These conditions provide selective exo-cyclization/azidation of the carbon-carbon double bond, furnishing a versatile approach