Process for preparing tritylated polystyrene resin

Details Process for preparing tritylated polystyrene resin Process for preparing tritylated polystyrene resin

2005-04-05

2005-04-05

Teskin, Fred (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S333400, C525S359100, C525S359300

Reexamination Certificate

active

06875822

ABSTRACT:
The present invention relates to a process for preparing tritylated polystyrene resin. More particularly, the present invention is directed to a process for preparing tritylated polystyrene resins, comprising a step for tritylating polystyrene by reacting polystyrene resin with benzophenone dichloride or substituted benzophenone dichloride to introduce trityl group on the benzene moiety of the polystyrene.

REFERENCES:
patent: 4085261 (1978-04-01), Patchornik et al.
patent: 5084522 (1992-01-01), Frechet
patent: 5563220 (1996-10-01), Webber et al.
patent: 5922890 (1999-07-01), Bleicher
Fréchet, Jean M. J. et al. “Use of Polymers as Protecting Groups in Organic Synthesis.”Tetrahedron Letters. No. 35, pp. 3055-3056, 1975.
Cohen, B. J. et al. “Organic Synthesis Involving Multipolymer Reactions. Polymeric Trityllithium.”Journal of the American Chemical Society. vol. 99, No. 12, pp. 4165-4167, 1977.
Cohn, B. J. et al. “‘Wolf and Lamb’ Reactions: Equilibrium and Kinetic Effects in Multipolymer Systems.”Journal of the American Chemical Society. vol. 103, No. 25, pp. 7620-7629, 1981.
Borhan, Babak et al. “Suspension Copolymerization as a Route to Trityl-Functionalized Polystyrene Polymers.”Journal of Organic Chemistry. vol. 60, pp. 7375-7378. 1995.
Orosz, György et al. “Simple and Efficient Synthesis of 2-Chlorotritylchloride Resin.”Tetrahedron Letters. No. 39, pp. 3241-3242, 1998.
Hidai, Yuko et al. “Total Synthesis of Polyamine Toxin HO-416b Utilizing the 2-Nitrobenzenesulfonamide Protecting Group.”Tetrahedron Letters. No. 40, pp. 4711-4714, 1999.
Manzotti, Raffaella et al. “Improved Synthesis of (4-ethenylphenyl) diphenyl methanol and its Application in the Preparation of Trityl Functionalized Polystyrene Resin Containing Tetrahydrofuran derived Cross-linker.”Tetrahedron Letters. No. 41, pp. 8417-8420, 2000.

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