Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Cavitands as Containers for α,ω-Dienes and Chaperones for Olefin Metathesis
Δημιουργός/Συγγραφέας:	Wu N.-W. [EL] Πετσαλάκης, Ιωάννης Δ.[EN] Petsalakis, Ioannis D. [EL] Θεοδωρακοπούλου, Γιαννούλα[EN] Theodorakopoulos, Giannoula Yu Y. Rebek J. Jr.
Εκδότης:	Wiley-VCH Verlag
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	1433-7851
DOI:	10.1002/anie.201808265
Άλλο:	PubMed ID: 30246478
Περίληψη:	Described herein is the behavior of α,ω-dienes sequestered within cavitands in aqueous (D2O) solution. Hydrophobic forces drive the dienes into the cavitands in conformations that best fill the available space. Shorter dienes (C9 and C10) bind in compressed conformations that tumble rapidly in the cavitands. Longer dienes induce capsule formation between cavitands with self-complementary hydrogen bonding sites, where the dienes exist in extended conformations. In cavitands unable to form capsules, longer dienes adopt folded structures. The wider open ends allow the synthesis of medium-sized cycloalkenes by ring-closing metathesis reactions with the Hoveyda–Grubbs-II catalyst. Yields of cycloheptene and cyclooctene were enhanced by the chaperones in water when compared with reactions of the free dienes in either aqueous media or chloroform, and even cyclononene could be prepared within the cavitand.
Τίτλος πηγής δημοσίευσης:	Angewandte Chemie - International Edition
Τόμος/Κεφάλαιο:	57
Τεύχος:	46
Σελίδες:	15091-15095
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	alkenes conformation analysis cyclizations metathesis supramolecular chemistry
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Σημειώσεις:	National Science Foundation, NSF: CHE 1506266, CHE1213415; Shanghai University, SHU: N.13-0101-17-202; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning We thank the National Science Foundation (CHE1213415 and CHE 1506266), Shanghai University (N.13-0101-17-202), and the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning for financial support.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο