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Synthesis of Chiral Rhenium Complexes Containing Functionalized Thiolate Ligands by Nicolai Burzlaff; Wolfdieter A. Schenk is a Chemistry article available to read on EtoBox.
What is Synthesis of Chiral Rhenium Complexes Containing Functionalized Thiolate Ligands about?
Chiral racemic rhenium thiolate complexes [CpRe-SCH 2 CH 2 NHAc (8), SCH 2 CH 2 C(O)OH (9). A milder synthesis using hydrated sodium carbonate as a base (NO)(PPh 3 )(SR)] were obtained under either acidic or basic conditions. Thus, when [CpRe(NO)(PPh 3 )(CH 3 )] (1) was provided 8 and compounds with SR = SCH 2 CH 2 C(O)OMe (10), SCH 2 CH 2 C(O)NHCH 2 Ph (11) in high yields. Using treated with etheral HBF 4 and HSR the thiolate complexes similar methods, thiolate complexes of (R)-N-acetylcysteine (13), its methyl ester ( 14), (R)-N-phthaloylcysteine ( 16), and (O)OEt (3)] were obtained after chromatographic workup. Ligand exchange reactions between [CpRe(NO)(PPh 3 )-N-[(S)-3-mercapto-2-methylpropionyl]-S-proline (Captopril) (17) were obtained as diastereomeric pairs. The formation of (OC 4 H 8 )]BF 4 (4) and sodium thiolates yielded analogous complexes with SR = SH (5), SCH 2 CH 2 Ph (6), SCH 2 CH=CH 2 13 was preceded by the O-bonded isomer 12 which slowly rearranges in solution. 13 can be converted under acidic (7). SR groups which tolerate strongly alkaline conditions may be introduced by treatment of 4 with HSR in the conditions into its methyl ( 14) or ethyl (15) esters. The dia
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- Author
- Nicolai Burzlaff; Wolfdieter A. Schenk
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1434-1948)
- Published
- 1998
- Language
- EN
- Field
- Chemistry (Physical Sciences)