Results 31 to 40 of about 1,019,081 (92)

Synthesis of α‑Alkenyl α,β-Unsaturated Ketones via Dehydrogermylation of Oxagermacycles with Regeneration of the Germanium(II) Species

, 2019
The synthesis of α-alkenyl α,β-unsaturated ketones using germanium­(II) salts is reported. Oxagermacycles derived from α,β-unsaturated ketones with germanium­(II) salts and aldehydes can be transformed into α-alkenyl α,β-unsaturated ketones.
Yohei Minami, Yohei Minami (5440253), Akihito Konishi, Makoto Yasuda (1768612), Makoto Yasuda, Akihito Konishi (1998631)   +5 more
core   +1 more source

Safety and efficacy of a feed additive consisting of an essential oil obtained from the flowering aerial parts of Thymus vulgaris L. and/or Thymus zygis L. (thyme oil) for use in all animal species (FEFANA asbl)

EFSA Journal, Volume 23, Issue 12, December 2025.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of an essential oil from the flowering aerial parts of Thymus vulgaris L. and/or Thymus zygis L. (thyme oil) when used as a sensory additive in feed and in water for drinking for all animal species.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Maria de Lourdes Bastos, Emilio Benfenati, Paul Brantom, Andrew Chesson, Josef Schlatter, Johannes Westendorf, Paola Manini   +23 more
wiley   +1 more source

A Novel Pyrrolidine Imide Catalyzed Direct Formation of α,β-Unsaturated Ketones from Unmodified Ketones and Aldehydes

, 2016
A method for direct, stereoselective preparation of (E)-α,β-unsaturated ketones from ketones and aldehydes, promoted by a novel pyrrolidine imide organocatalyst, has been developed in moderate to high yields.
Yujiang Mei (2067211), Wei Wang (17594), Jian Wang (5901), Hao Li (31608)   +3 more
core   +1 more source

Safety and efficacy of a feed additive consisting of an essential oil derived from the aerial parts of Mentha spicata L. (spearmint oil) for use in all animal species (FEFANA asbl)

EFSA Journal, Volume 23, Issue 12, December 2025.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of an essential oil from the aerial parts of Mentha spicata L. (spearmint oil) when used as a sensory additive in feed and in water for drinking for all animal species.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Maria de Lourdes Bastos, Emilio Benfenati, Paul Brantom, Andrew Chesson, Josef Schlatter, Johannes Westendorf, Paola Manini   +23 more
wiley   +1 more source

Safety and efficacy of a feed additive consisting of an essential oil derived from the leaves of Origanum majorana L. (marjoram oil) for use in all animal species (FEFANA asbl)

EFSA Journal, Volume 23, Issue 12, December 2025.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of an essential oil from the leaves of Origanum majorana L. (marjoram oil) when used as a sensory additive in feed and in water for drinking for all animal species.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Maria de Lourdes Bastos, Emilio Benfenati, Paul Brantom, Andrew Chesson, Josef Schlatter, Johannes Westendorf, Paola Manini   +23 more
wiley   +1 more source

A Dive Into Forty Years of Research on Organic Superbases: From Design to Applications

Journal of Computational Chemistry, Volume 46, Issue 28, October 30, 2025.
This review covers the design and application of various neutral organic superbases with carbon, nitrogen, boron, silicon and germanium centers as basic sites. Their utility as organocatalysts has been reported with particular attention given to applications of commercially accessible organic superbases in some pivotal reactions.
Rabindranath Lo, Bishwajit Ganguly
wiley   +1 more source

Safety and efficacy of a feed additive consisting of an essential oil derived from the flowering aerial parts of Salvia rosmarinus Spenn. (rosemary oil) for use in all animal species (FEFANA asbl)

EFSA Journal, Volume 23, Issue 10, October 2025.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of an essential oil from the flowering aerial parts of Salvia rosmarinus Spenn. (rosemary oil) when used as a sensory additive in feed and in water for drinking for all animal species.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Maria de Lourdes Bastos, Emilio Benfenati, Paul Brantom, Andrew Chesson, Josef Schlatter, Johannes Westendorf, Paola Manini   +23 more
wiley   +1 more source

Me3SiOTf Promoted Aza-Michael Addition Reaction of 1o-Amide with a,b-Unsaturated Ketone

, 2010
Lewis acid, Me3SiOTf, has been shown to be a promising promoter for aza-Michael reaction of relatively acidic primary amide with α,β-unsaturated ketone.
Adam Shih‐Yuan Lee, Mei‐Chun Lin, Chih‐Chen Lin, 李世元, Lee, Adam Shih-yuan, Lee, Shih-yuan, Yu‐Ting Chang   +6 more
core   +1 more source

Safety and efficacy of feed additives consisting of rosemary tinctures obtained from the leaves of Salvia rosmarinus Spenn. for use in all animal species (FEFANA asbl)

EFSA Journal, Volume 23, Issue 10, October 2025.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of two tinctures obtained from the leaves of Salvia rosmarinus Spenn. (rosemary tinctures) when used as sensory additives.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Maria de Lourdes Bastos, Emilio Benfenati, Paul Brantom, Andrew Chesson, Josef Schlatter, Johannes Westendorf, Paola Manini   +23 more
wiley   +1 more source

Recent Advancements in the Hydrodeoxygenation of Lignin‐Derived Phenols to Cyclohexane‐Based Products Over Supported Ruthenium Catalysts

ChemCatChem, Volume 17, Issue 18, September 19, 2025.
This review elucidates structure‐activity relationships in Ru‐supported catalysts for hydrodeoxygenation of lignin‐derived phenolics to cyclohexane‐based products. It highlights the synergy between Ru nanoparticle size, dispersion, and electronic state with tailored support acidity and defects, enabling efficient hydrogenation–deoxygenation.
Gousia Begum, Rakesh Chilivery, Krishna Kanthi Gudimella, S. Mohanapriya, Mallesham Baithy   +4 more
wiley   +1 more source