Please use this identifier to cite or link to this item:
http://hdl.handle.net/10553/74774
Title: | Highly Chemo- and Stereoselective Transfer Semihydrogenation of Alkynes Catalyzed by a Stable, Well-Defined Manganese(II) Complex | Authors: | Brzozowska, Aleksandra Azofra Mesa, Luis Miguel Zubar, Viktoriia Atodiresei, Iuliana Cavallo, Luigi Rueping, Magnus El-Sepelgy, Osama |
UNESCO Clasification: | 221001 Catálisis | Issue Date: | 2018 | Journal: | ACS Catalysis | Abstract: | Herein we report unprecedented manganese-catalyzed semihydrogenation of internal alkynes to (Z)-alkenes using ammonia borane as a hydrogen donor. The reaction is catalyzed by a pincer complex of the earth-abundant manganese(II) salt in the absence of any additives, base, or superhydride. The ammonia borane smoothly reduces the manganese precatalyst [Mn(II)–PNP][Cl]2 to the catalytically active species [Mn(I)–PNP]–hydride in the triplet spin state. This manganese hydride is highly stabilized by complexation with the alkyne substrate. Computational density functional theory (DFT) analysis studies of the reaction mechanism rationalize the origin of stereoselectivity toward formation of (Z)-alkenes. | URI: | http://hdl.handle.net/10553/74774 | ISSN: | 2155-5435 | DOI: | 10.1021/acscatal.8b00983 | Source: | ACS Catalysis [ISSN 2155-5435], v. 8, 5, p. 4103-4109 |
Appears in Collections: | Artículos |
WEB OF SCIENCETM
Citations
93
checked on Sep 15, 2024
Page view(s)
92
checked on May 18, 2024
Download(s)
416
checked on May 18, 2024
Google ScholarTM
Check
Altmetric
Share
Export metadata
Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.