TY - JOUR AB - Bis-quaternary ammonium salts are used for the extraction of polyanions and show better extractive abilities than common phase transfer catalysts. DA - 1989 DO - 10.1016/S0040-4039(00)99553-4 LA - eng IS - 13 M2 - 1683 PY - 1989 SN - 0040-4039 SP - 1683-1686 T2 - Tetrahedron Letters TI - Bis-quaternary ammonium salts as phase transfer catalysts UR - https://nbn-resolving.org/urn:nbn:de:0070-pub-17848657 Y2 - 2024-11-22T01:20:03 ER -