Synfacts 2009(6): 0695-0695  
DOI: 10.1055/s-0029-1216755
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Reduction of Nitroarenes with Platinum-Encapsulating Polysiloxane Gels

Contributor(s): Yasuhiro Uozumi, Takao Osako
Y. Motoyama, K. Kamo, H. Nagashima*
Kyushu University, Kasuga, Japan
Further Information

Publication History

Publication Date:
25 May 2009 (online)


A platinum-encapsulating poly­siloxane gel ([Pt]@SiC6) was prepared by treatment of PMHS with 1,5-hexadiene in the presence of Karstedt’s catalyst in THP (eq. 1). [Pt]@SiC6 catalyzed the hydrogenation of various nitro compounds under 10 atm of H2 at room temperature to afford the corresponding amines in up to >99% yield (13 examples, eq. 2). In the hydrogenation of 4-nitroanisole, the catalyst was recovered by simple filtration and reused five times without significant loss of catalytic activity.