Výsledky vyhledávání - "David Grassi"

Stillness to rescue the Olympic Movement: exploring opportunities in the postponement of Tokyo 2020

Autor: Divya Saini, Christine Dankwa, David Grassi, Marjorie Enya, Aikaterini Plakouda

Publikováno v: Olimpianos - Journal of Olympic Studies. 4:37-48

The COVID-19 pandemic has resulted in the decision of the International Olympic Committee (IOC) to postpone the Tokyo 2020 Olympic Games, which is an unprecedented decision that is bringing about colossal challenges to every institutional stakeholder

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41a0fa85a36cbfdce2ed5d4eb5d33ace
https://doi.org/10.30937/2526-6314.v4.id93

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Ridurre il fallimento formativo precoce e la dispersione scolastica: un'analisi empirica sulle istituzioni scolastiche in tema di inclusione sociale e lotta al disagio

Autor: David Grassi, Patrizia Lotti, Samuele Calzone, Rosalba Manna

Publikováno v: WELFARE E ERGONOMIA. :141-165

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65f45bdf96979803757d0cc9b1004df7
https://doi.org/10.3280/we2017-002008

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Copper-Catalyzed Propargylic Substitution of Dichloro Substrates: Enantioselective Synthesis of Trisubstituted Allenes and Formation of Propargylic Quaternary Stereogenic Centers

Autor: Laure Guénée, David Grassi, Hailing Li, Thomas Bürgi, Alexandre Alexakis

Publikováno v: Chemistry-A European Journal, Vol. 20, No 50 (2014) pp. 16694-16706

An easy and versatile Cu-catalyzed propargylic substitution process is presented. Using easily prepared prochiral dichloro substrates, readily available Grignard reagents together with catalytic amount of copper salt and chiral ligand, we accessed a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f515001ebf47809d69f4d2f7cb872569
https://doi.org/10.1002/chem.201404668

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Transition metal-free asymmetric and diastereoselective allylic alkylation using Grignard reagents: construction of vicinal stereogenic centers via kinetic resolution

Autor: David Grassi, Alexandre Alexakis

Publikováno v: CHEMICAL SCIENCE
Chemical Science, Vol. 5, No 10 (2014) pp. 3803-3807

The first transition metal-free diastereoselective and enantioselective asymmetric allylic alkylation (AAA) has been disclosed leading to the construction of vicinal tertiary/quaternary centers via a kinetic resolution protocol starting from readily

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::422bd5e5a0093d9ffdbd2fe5991f073f
https://doi.org/10.1039/c4sc01003e

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Copper-Free Asymmetric Allylic Alkylation of Trisubstituted Cyclic Allyl Bromides Using Grignard Reagents

Autor: David Grassi, Alexandre Alexakis

Publikováno v: Angewandte Chemie: International Edition in English, Vol. 52, No 51 (2013) pp. 13642-13646
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

AAA: The asymmetric allylic alkylation (AAA) of trisubstituted cyclic allyl bromides with Grignard reagents is catalytic (2 mol % of ligand) and regioselective (SN 2'/SN 2=91:9→100:0). The quaternary carbon centers are formed with good to high enan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0995aa473ed1cf813e13d40b158ecad2
https://doi.org/10.1002/anie.201307591

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