610312-01-1Relevant academic research and scientific papers
Reactions of ruthenium acetylide complexes with EtO2CNCS: Alkylation of the thione with dichloromethane
Chang, Chao-Wan,Lin, Ying-Chih,Lee, Gene-Hsiang,Wang, Yu
, p. 3891 - 3897 (2003)
Treatment of the ruthenium acetylide complexes [M]C≡CPh (1a, [M] = [Ru] = Cp(Ph2-PCH2CH2PPh2)Ru; 1b, [M] = [Ru′] = Cp(PPh3)[P(OMe)3]Ru) with 1.1 equiv of EtO2CN=C=S results in [2 + 2] cycloadditions yielding the four-membered-ring 2-iminothiete products 2a,b, respectively. Isomerization of complex 2a results in formation of 3a containing the six-membered-ring oxazinethione ligand. Alkylation of complex 3a by CH2Cl2 takes place at the thione sulfur to give 4a, which loses ethyl chloride, yielding the new six-membered-ring [1,3]-oxazin-2-one complex 5a. Further alkylation of 3a by the chloromethyl group of 5a affords the dinuclear complex 6a with two oxazin-2-one ligands bridged by a methylene group. Structures of 2b, 3a, 5a and 6a have been determined by single-crystal X-ray diffraction analysis.
