Synthesis of 12-hydroxy and 12-dioxane derivatives of the closo-1-carbadodecaborate(1-) ion. Variations on the Plesek's cobalt bis(dicarbollide) pattern

0163337 - UACH-T 20023009 RIV CZ eng J - Článek v odborném periodiku
Grüner, Bohumír - Císařová, I. - Čáslavský, Josef - Bronnetot, B. - Cornu, D.
Synthesis of 12-hydroxy and 12-dioxane derivatives of the closo-1-carbadodecaborate(1-) ion. Variations on the Plesek's cobalt bis(dicarbollide) pattern.
Collection of Czechoslovak Chemical Communications. Roč. 67, č. 7 (2002), s. 953-964. ISSN 0010-0765
Grant CEP: GA MŠMT LN00A028; GA ČR GA203/00/1042; GA ČR GA203/02/0436; GA ČR GA203/99/M037
Výzkumný záměr: CEZ:AV0Z4032918
Klíčová slova: boranes * carboranes * monocarbaboranes
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 0.848, rok: 2002

Synthesis of two new B(12) substituted derivatives of the closo-[1-CB11H12](-) anion (1) is reported. The zwitterionic derivative containing dioxane ring {12-[O(CH2CH2)(2)O](+) -1-CB11H11-}(0) (2) was obtained in moderate yield using reaction of anion 1 with dioxane as solvent, induced by dimethyl sulfate. The anion [12-(HO)-1-CB11H11](-) (3) was obtained in high yield upon treatment of the parent anion with 80% H2SO4 at high temperature. Both compounds containing reactive functionalities were designed to serve as useful synthons for a variety of synthetic purposes. The compounds were characterized by B-11 and H-1 high-field NMR, IR spectroscopy, mass spectrometry, melting points and TLC. Molecular structure of compound 2 was determined by single crystal X-ray diffraction analysis.
Trvalý link: http://hdl.handle.net/11104/0060588