Extensive use of the three-dimensional solubility parameters for predicting adhesion seems not to have been made, although its additional flexibility should make it successful over a wider range of conditions than the single-parameter approach. Some recent studies involving dental adhesion employed the method with success. Asmussen and Uno fl40 successfully correlated the shear bond strength of various dental adhesive resins, characterized in terms of their three-  [c.56]

Synthetic work in the imidazole series is complicated by the ready tautomeric equilibrium that can be set up among the double bond isomers (A, B). Thus, even i a reaction designed to afford the 5 isomer (A) is accomplished rcgiospecifically, tautomeriza-tion of the product affords either the 4 isomer (B) or a mixture of the two. (This tautomerism is, of course, no problem in azomycin because of the symmetry of that molecule.)  [c.238]

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The organic chemistry of drug synthesis Vol.1 (1977) -- [ c.238 ]