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Synlett 1997; 1997(10): 1205-1207
DOI: 10.1055/s-1997-986
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Synthesis of a Sterically Congested Highly Chlorinated Triphenylmethane Dendrimer

D. Ruiz, J. Veciana, C. Rovira*
  • *Institut de Ciència de Materials de Barcelona (CSIC). Campus U.A.B., 08193 Bellaterra, Spain, Fax 34-3-5805729; C.Rovira@icmab.es
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Publication Date:
31 December 2000 (online)

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The synthesis of the highly congested dendrimer tris(α,α-bispentachlorophenyl-2,4,5,6-tetrachlrotolyl)methane (1) is not feasible by a stepwise divergent synthesis due to the large steric impedance. Its synthesis has been achieved by exhaustive chlorination of the parent dendritic hydrocarbon 5 under conditions that avoid fragmentation of either species.

polytriphenylmethanes - highly chlorinated aromatics - dendrimers - Friedel-Crafts alkylation - steric hindrance