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Grego

Inglês

Informações

Grego

heck.

Inglês

heck.

Última atualização: 2016-03-03
Frequência de uso: 1
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Grego

Από το πρωτοποριακό έργο των heck και των συνεργατών, η καταλυόμενη από μεταβατικό μέταλλο καρβονυλίωση των οργανικών (ψευδο) αλογονιδίων παρουσία αέριου μονοξειδίου του άνθρακα ή των υποκατάστατων αυτών και των διαφόρων πυρηνόφιλων έχει αναγνωριστεί ως ισχυρή προσέγγιση στα καρβοξυλικά οξέα ή τα παράγωγά τους, τις κετόνες και τις αλδεΰδες .2 Από την άλλη πλευρά, η καταλυόμενη από μεταβατικό μέταλλο άμεση λειτουργία των σχετικά αδρανών δεσμών Ο-Η είναι ένα οικονομικό άτομο και ένα βήμα αποτελεσματικής εναλλακτικής σε σχέση με τον παραδοσιακό μετασχηματισμό χρησιμοποιώντας (ps

Inglês

since the pioneering work of heck and co-workers,1 transitionmetal-catalyzed carbonylation of organic (pseudo)halides in the presence of gaseous carbon monoxide or its surrogates and various nucleophiles has been recognized as a powerful approach to carboxylic acids or their derivatives, ketones and aldehydes.2 on theotherhand,transition-metal-catalyzeddirectfunctionalizationof relatively inert c–h bonds is an atom-economic and step-efficient alternative to traditional transformation using (pseudo)halides as substrates, and substantial achievements have been made during the last decade.3 carbonylation of c–h bonds is arguably an ideal strategy to introduce carbonyl functional units into molecules.4 among many c–h carbonylation reactions reported to date, directing groups are usually required to lead the transition metalwhereanadjacentc–hbondcouldbeactivatedselectively.5

Última atualização: 2019-05-30
Frequência de uso: 2
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