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(Benzol)osmium(II)‐Komplexe mit cyclischen Oxycarben‐ und Vinylether‐Liganden
Author(s) -
Werner Helmut,
Knaup Wolfgang,
Schulz Michael
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911240521
Subject(s) - chemistry , osmium , deprotonation , trifluoromethanesulfonate , crystal structure , ether , medicinal chemistry , vinyl ether , benzene , stereochemistry , polymer chemistry , catalysis , organic chemistry , ion , polymer , ruthenium , copolymer
(Benzene)osmium(II) Complexes with Cyclic Oxycarbenes and Vinyl Ethers as Ligands The compounds [C 6 H 6 Os(PR 3 )] 2 ] ( 5, 6 ) react with 1‐alkynols HCCCH 2 CHR'OH in the presence of AgPF 6 to give cyclic oxycarbene complexes ( 7 – 9 ) in almost quantitative yields. During the reaction vinylideneosmium intermediates are probably formed. Deprotonation of 7 – 9 with NaH affords the vinyl ether complexes ( 10 – 12 ). Reaction of 10 with methyl triflate (in the presence of NaH) leads to the formation of ( 13 ). The crystal and molecular structure of the oxycarbene complex 7 has been determined.