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Carboranycarboxylate Complexes as Efficient Catalysts in Epoxidation Reactions
Author(s) -
Fontanet Mònica,
Rodríguez Montserrat,
Viñas Clara,
Teixidor Francesc,
Romero Isabel
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201700361
Subject(s) - chemistry , catalysis , ligand (biochemistry) , cobalt , manganese , medicinal chemistry , selectivity , metal , peracetic acid , stereochemistry , inorganic chemistry , organic chemistry , hydrogen peroxide , biochemistry , receptor
This work presents the first examples of carboranylcarboxylate complexes as precatalysts in epoxidation reactions with the use of peracetic acid as the oxidant. The manganese [Mn(µ‐H 2 O)(1‐CH 3 ‐2‐CO 2 ‐1,2‐ closo ‐C 2 B 10 H 10 ) 2 ] n · (H 2 O) n ( 1 ), [Mn 2 (1‐CH 3 ‐2‐CO 2 ‐1,2‐ closo ‐C 2 B 10 H 10 ) 4 (2,2′‐bpy) 2 ] ( 2 , bpy = bipyridine), [Mn(1‐CH 3 ‐2‐CO 2 ‐1,2‐ closo ‐C 2 B 10 H 10 ) 2 (bpm)] n ( 3 , bpm = bipyrimidine), and [Mn(1‐CH 3 ‐2‐CO 2 ‐1,2‐ closo ‐C 2 B 10 H 10 ) 2 (2,2′‐bpy) 2 ] ( 4 ) complexes and the cobalt [Co 2 (µ‐H 2 O)(1‐CH 3 ‐2‐CO 2 ‐1,2‐ closo ‐C 2 B 10 H 10 ) 4 (thf) 4 ] ( 6 ) complex, all containing the carboranylcarboxylic 1‐CH 3 ‐2‐CO 2 H‐1,2‐ closo ‐C 2 B 10 H 10 (LH) ligand, together with Mn 3 (OAc) 6 (2,2′‐bpy) 2 ( 5 ) displayed good performance with high conversions and selectivity values in short reaction times, in most cases. This work highlights that the coordination of the carboranylcarboxylic ligand to the metal ions is crucial to the performance of the complexes as catalysts.