TY - JOUR AU - Inés, Blanca; Holle, Sigrid; Bock, Dominique A.; Alcarazo, Manuel TI - Polyfluorinated Cyclopentadienones as Lewis Acids SN - 0936-5214 SN - 1437-2096 PY - 2014 JO - Synlett JF - Synlett LA - EN VL - 25 IS - 11 SP - 1539 EP - 1541 ET - 2014/06/11 DA - 2014/06/23 KW - Lewis acids KW - frustrated Lewis pairs KW - steric hindrance KW - ketones KW - fluorine KW - phosphines AB - The ability of 2,3,4,5-tetrakis(trifluoromethyl)cyclopenta-2,4-dien-1-one and 2,3,4,5-tetrakis(pentafluorophenyl)cyclopenta-2,4-dien-1-one to act as organic Lewis acids in the field of frustrated Lewis pair (FLP) chemistry was evaluated. Whereas the former ketone formed zwitterionic adducts with all phosphines studied, the latter did not react with bulky phosphines and, instead, gave completely organic FLPs. Unfortunately, these did not activate dihydrogen, even under high pressures. PB - © Georg Thieme Verlag DO - 10.1055/s-0034-1378348 UR - http://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0034-1378348 ER -