Multiple Halogenation of Aliphatic C−H Bonds within the Hofmann-Löffler Manifold
作者:Estefanía Del Castillo、Mario D. Martínez、Alexandra E. Bosnidou、Thomas Duhamel、Calvin Q. O'Broin、Hongwei Zhang、Eduardo C. Escudero-Adán、Marta Martínez-Belmonte、Kilian Muñiz
DOI:10.1002/chem.201804504
日期:2018.11.22
position‐selective polyhalogenation of aliphatichydrocarbon bonds is presented. The reaction proceeded within the Hofmann‐Löffler manifold with amidyl radicals as the sole mediators to induce selective 1,5‐ and 1,6‐hydrogen‐atom transfer followed by halogenation. Multiple halogenation events of up to four innate C−H bond functionalizations were accomplished. The broad applicability of this new entry into polyhalogenation
The 1,3-dipolarcycloaddition reactivity and regioselectivity of methyleneadamantane 1, ethyl adamantylideneacetate 7a, adamantylideneacetonitrile 7b and ω-methoxymethyleneadamantane 7c with substituted benzonitrileoxides 3a-i were calculated by CNDO/2 method using the perturbation equation derived by Klopman and Salem. The calculation predicted an exclusive formation of adamantan - 2 - spiro - 5'
Reduction of unsaturated adamantyl-containing nitriles with lithium aluminum hydride in 2-methyltetrahydrofuran
作者:I. A. Novakov、B. S. Orlinson、N. N. Mamutova、E. N. Savel’ev、E. A. Potayonkova、L. A. Pyntya、M. A. Nakhod
DOI:10.1134/s1070363216060062
日期:2016.6
Reduction of unsaturated adamantyl-containing nitriles with lithiumaluminumhydride in 2-methyltetrahydrofuran was examined. It was found that under the synthesis conditions a simultaneous reduction of the double bond and the nitrile group successfully occurred. The presence of bulky substituents in the α-position to the adamantyl moiety of nitriles led to a significant increase in the synthesis duration
Synthesis of 2-adamantyl-containing amines as compounds with potential pharmacological activity
作者:I. A. Novakov、B. S. Orlinson、E. N. Savel’ev、E. A. Alykova、A. M. Pichugin、M. A. Kovaleva、A. O. Sergeev、N. A. Demidovich、E. V. Kondrat’ev
DOI:10.1007/s11172-022-3701-1
日期:2022.12
The regularities of the reduction of unsaturated nitriles containing the 2-adamantyl fragment with lithium aluminum hydride and nickel—aluminum alloy were studied. In both cases, the double bond and nitrile group were simultaneously reduced. The presence of bulky substituents in the substrate in the α-position to the adamantyl fragment and hydroxy groups significantly retards the process, and the 80–90% yield of the corresponding products is achieved only when the temperature is raised to 65 °C. In the case of using a nickel—aluminum alloy, its 4—6-fold excess is required. The calculation of the potential pharmacological activity of the synthesized compounds shows that they can have antiviral, analgesic, and antidiabetic activity.
Colloid and nanosized catalysts in organic synthesis: XII. Hydrogenation of carbonitriles catalyzed by nickel nanoparticles
作者:V. M. Mokhov、Yu. V. Popov、K. V. Shcherbakova
DOI:10.1134/s1070363216020110
日期:2016.2
Hydrogenation of carbonitriles catalyzed by nickel nanoparticles in isopropanol proceeds under atmospheric pressure of hydrogen within 6-15 h to yield mainly secondary amines. Hydrogenation of alpha-aminonitriles results in reductive decyanation. beta-Aminonitriles undergo hydrogenolysis at the nitrogen-carbon bond.