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Updated: Jan 8, 2026

Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
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Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes

Published on: April 1, 2013

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在氨酸甲基化与甲醇中用于可切换催化剂的Redox-可切换纳夫他二胺-NHC复合物

Maite Silva-Muñoz1, Víctor Martínez-Agramunt1, Macarena Poyatos1

  • 1Institute of Advanced Materials (INAM). Centro de Innovación En Química Avanzada (ORFEO-CINQA), Universitat Jaume I, Av Vicente Sos Baynat S/N, Castellón de la Plana, Castellón E-12071, Spain.

Inorganic chemistry
|December 11, 2025
PubMed
概括

研究人员使用纳夫他二胺 (NDI) 功能化的N- heterocyclic carbene (NHC) 连接物开发了新的和催化剂. 这些可回氧切换的催化剂有效地调解N-甲基化反应,表现出可调节的电子特性,以增强催化活性.

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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
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All ortho–para directors, excluding halogens, are activating groups. These groups donate electrons to the ring, making the ring carbons electron-rich. Consequently, the reactivity of the aromatic ring towards electrophilic substitution increases. For instance, the nitration of anisole is about 10,000 times faster than the nitration of benzene. The electron-donating effect of the methoxy group in anisole activates the ortho and para positions on the ring and stabilizes the corresponding...
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Birch reduction uses solvated electrons as reducing agents. The reaction converts benzene to 1,4-cyclohexadiene. The reaction proceeds by the transfer of a single electron to the ring to form a benzene radical anion. This anion is highly basic—it abstracts a proton from the alcohol to form a cyclohexadienyl radical. Another single electron transfer gives the cyclohexadienyl anion. A proton transfer from the alcohol forms 1,4-cyclohexadiene. Since this reduction occurs via radical anion...
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