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Useful resin for the immobilization of carboxylic acids, via Mitsunobu methodology, which are subsequently cleaved with Pd(OAc)2 in DMF: Tetrahedron Lett., 18, 2851 (1977). Phosgenation converts this resin to the polymer-supported chloroformate which has found use as a scavenger resin for amines: Tetrahedron Lett., 34, 2589 (1993)./n