Results 51 to 60 of about 17,602 (278)

Aromatic annulation with bisphenylthionium ions

, 1987
The chemospecific production and intramolecular aromatic electrophilic substitution (annulation) of bis(phenylthio)carbocations (bisphenylthionium ions) has been studied using appropriate model compounds.
Manas, Abdul Rahman, Smith, Robin A. J.
core   +1 more source

Ban Glyphosate—Does It Affect the Swedish Farmers' Willingness to Grow Cover Crops?

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT The cultivation of cover crops is one of the new Eco‐scheme practices introduced in Sweden. This study examines how the design of policy attributes of these schemes influences farmers' willingness to grow cover crops on arable land, with particular focus on the potential impact of a glyphosate ban.
Vivian Wei Huang, Anna Kristina Edenbrandt, Elin Röös   +2 more
wiley   +1 more source

Recent topics of Cp∗RuCl-catalyzed annulation reactions [PDF]

, 2017
A wide variety of annulation reactions have been developed using Cp^∗RuCl(cod) and related complexes as precatalysts. This digest highlights recent progress in Cp^∗RuCl-catalyzed annulation reactions. State-of-the-art examples are outlined as follows: [2+
Yoshihiko Yamamoto, Yamamoto, Yoshihiko
core   +1 more source

Regioselectivity of the SEAr-based cyclizations and SEAr-terminated annulations of 3,5-unsubstituted, 4-substituted indoles

Beilstein Journal of Organic Chemistry, 2022
Indole-3,4- and 4,5-fused carbo- and heterocycles are ubiquitous in bioactive natural products and pharmaceuticals, and hence, a variety of synthetic approaches toward such compounds have been developed.
Jonali Das, Sajal Kumar Das
doaj   +1 more source

Synthesis of Functionalized Isoquinolone Derivatives via Rh(III)-Catalyzed [4+2]-Annulation of Benzamides with Internal Acetylene-Containing α-CF₃-α-Amino Carboxylates

Molecules, 2022
A convenient pathway to a new series of α-CF3-substituted α-amino acid derivatives bearing pharmacophore isoquinolone core in their backbone has been developed.
Daria V. Vorobyeva, Dmitry A. Petropavlovskikh, Ivan A. Godovikov, Fedor M. Dolgushin, Sergey N. Osipov   +4 more
doaj   +1 more source

Synthesis of CF₃-Containing Spiro-[Indene-Proline] Derivatives via Rh(III)-Catalyzed C-H Activation/Annulation

Molecules, 2023
An efficient method of accessing new CF3-containing spiro-[indene-proline] derivatives has been developed based on a Cp*Rh(III)-catalyzed tandem C-H activation/[3+2]–annulation reaction of 5-aryl-2-(trifluoromethyl)-3,4-dihydro-2H-pyrrole-2-carboxylates ...
Alexandra S. Bubnova, Daria V. Vorobyeva, Ivan A. Godovikov, Alexander F. Smol’yakov, Sergey N. Osipov   +4 more
doaj   +1 more source

Mapping Ambiphile Reactivity Trends in the Anti-(Hetero)annulation of Non-Conjugated Alkenes via Pd(II)/Pd(IV) Catalysis

, 2021
In this study, we systematically evaluate different ambiphilic organohalides for their ability to participate in anti-selective carbo- or heteroannulation with non-conjugated alkenyl amides under Pd catalysis. Detailed optimization of reaction conditions
Joyann, Donaldson, Indrawan, McAlpine, Neal, Sach, Keary, Engle, Shouliang, Yang, Pranali, Bedekar, Fen, Wang, Hui-Qi, Ni, Phillippa, Cooper, Michelle, Tran-Dubé   +9 more
core   +1 more source

Cathodic oxygen reduction-enabled rhodium-catalyzed (5 + 1) C–H/O–H annulation inspired by fuel cells

Nature Communications
Transition metal-catalyzed electrochemical C–H annulation with alkynes has emerged as a promising method for constructing heterocycles via formal cycloadditions. However, catalytic electrochemical C–H annulation with alkenes has been less explored.
Yuan-Qiong Huang, Li Zhu, Tian-Sheng Mei
doaj   +1 more source

Rh(III)-Catalyzed Annulation of Boc-Protected Benzamides with Diazo Compounds: Approach to Isocoumarins

Molecules, 2019
A mild rhodium-catalyzed annulation of Boc-protected benzamides with diazo compounds via C−C/C−O bond formation has been explored. In the presence of [Cp*RhCl2]2, AgSbF6 and Cs2CO3, Boc-protected benzamides can be effectively annulated to ...
Guangyu Dong, Chunpu Li, Hong Liu
doaj   +1 more source

An Annulation Toward Fused Bicyclolactones. [PDF]

ChemInform, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Rene-Viet, Nguyen, Chao-Jun, Li
openaire   +2 more sources