Tetraalkylammonium salts bearing PF6– and BF4– anions have been recognized as recoverable phase‐transfer catalysts for the synthesis of 1,1‐dichlorocyclopropane and α‐(trichloromethyl)carbinol derivatives from alkenes or aldehydes in the heterogeneous system KOH(s)/CHCl3. The catalysts retained their catalytic activity over several reactioncycles.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

Tetraalkylammonium and 1,3-dialkylimidazolium tetrafluoroborates and hexafluorophosphates were employed for the first time as recoverable phase-transfer catalysts in multiphase reactions of CH-acids, in particular in solid base-pro-

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C2‐Symmetric (S)‐prolinamides modified with ionic groups and bearing achiral diamine units were synthesized. Their potency as reusable organocatalysts for asymmetric aldol reactions of cycloalkanones or methyl ketones with aromatic (heteroaromatic) aldehydes in the presence of water was demonstrated. The 1,4‐diaminobenzene‐derived catalyst exhibited good catalytic performance and excellent recoverability over at least 15 reaction–regeneration cycles under the studied conditions.