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Surface wave velocities of crosslinked polyacrylate hydrogels were measured as a function of water content with different compositions of sodium polyacrylate (NaPA) and polyacrylic acid (PAA). The water content and composition dependencies of the surface wave velocity were discussed.

Enolates. -The Pd-catalyzed allylic substitution of phosphate esters with lithium enolates proceeds regioselectively. Retention of the stereochemistry is observed for the enantiomerically enriched substrate ((R)-I). -(KINOUCHI, W.; SAEKI, R.; KAWASHIMA, H.; KOBAYASHI*, Y.; Tetrahedron Lett. 56 (2015) 17, 2265-2268, http://dx.

A larger quantity of the reactant β‐keto ester or malonate ester than the base KOtBu is required to achieve high yields in the Pd‐catalyzed allylic substitution of cyclopentene‐1,3‐diol monoacetate and its Tbs‐ether.