Abstract
The synthesis of the first all-tin-dendrimer Sn[(CH 2) 4SnPh 3] 4 ( 2) results from complete hydrostannation of tetra(but-3-enyl)stannane ( 1) with triphenyltin hydride. Selective cleavage of one phenyl group from each dendron of 2 with anhydrous HCl results in Sn[(CH 2) 4Sn(Cl)Ph 2] 4 ( 3), which on treatment with LiAlH 4 yields the corresponding hydride derivative Sn[(CH 2) 4Sn(H)Ph 2] 4 ( 4) containing four reactive Sn–H bonds. The cyclopentadienyl derivative Sn[(CH 2) 4Sn(C 5H 5)Ph 2] 4 ( 5) as well as the transition metal substituted derivatives Sn[(CH 2) 4Sn{Co(CO) 4}Ph 2] 4 ( 6), Sn[(CH 2) 4Sn{Fe(CO) 2C 5H 5}Ph 2] 4 ( 7), and Sn[(CH 2) 4Sn{Mn(CO) 5}Ph 2] 4 ( 8) have been prepared by coupling of 3 with the appropriate Grignard or sodium derivatives of the transition metal moieties. The new compounds were characterized by elemental analyses, IR, 1H-, 13C- and 119Sn NMR spectroscopy and MALDI-TOF mass spectrometry.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
