IN-SITU CHEMICAL TAGGING - TETRAFLUOROPHTHALIC ANHYDRIDE AS A SEQUESTRATION ENABLING REAGENT (SER) IN THE PURIFICATION OF SOLUTION-PHASE COMBINATORIAL LIBRARIES
Jj. Parlow et al., IN-SITU CHEMICAL TAGGING - TETRAFLUOROPHTHALIC ANHYDRIDE AS A SEQUESTRATION ENABLING REAGENT (SER) IN THE PURIFICATION OF SOLUTION-PHASE COMBINATORIAL LIBRARIES, Tetrahedron letters, 38(46), 1997, pp. 7959-7962
A specific example of a Sequestration Enabling Reagent (SER), tetraflu
orophthalic anhydride, is used in the purification of solution-phase r
eactions involving amines with electrophiles. The SER is added to an i
ncomplete reaction mixture containing product, amine, and electrophile
. The SER covalently reacts with remaining amine, affording a derivati
zed amine with an artificially-imparted acid rag. This ''tagged'' amin
e is now sequesterable by the same CMR/R polyamine resin used to seque
ster the electrophile and both are easily removed from the reaction mi
xture affording pure product. (C) 1997 Elsevier Science Ltd.