Preparation of Organotrifluoroborate Salts: Precipitation‐Driven Equilibrium under Non‐Etching Conditions

• DOI: 10.1002/anie.201203930
• Publication Date: 2012-08-17T19:35:34Z
• Authors: Alastair J. J. Le...; Guy C. Lloyd‐Jones
• Keywords: Tartaric acid

Simple, rapid, and scaleable: In contrast to current procedures using corrosive HF/MF or MHF2 reagents (M=e.g. K), a wide range of trifluoroborates can be rapidly, simply, safely prepared from MF (M=K, Cs), RCO2H, boronic acid/ester in regular glassware (see figure; left versus right). The use L-(+)-tartaric acid as an alkali-metal sponge is key allows isolation RBF3M by simple stir/filter/evaporate sequence. Detailed facts importance specialist readers are published "Supporting Information". Such documents peer-reviewed, but not copy-edited typeset. They made available submitted the authors. Please note: publisher responsible for content functionality any supporting information supplied Any queries (other than missing content) should directed corresponding author article.