Facile and Reliable Synthesis of Tetraphenoxyborates and Their Properties
作者:Itamar M. Malkowsky、Roland Fröhlich、Ulrich Griesbach、Hermann Pütter、Siegfried R. Waldvogel
DOI:10.1002/ejic.200600074
日期:2006.4
Tetraphenoxyborates are reliably prepared in a two-step sequence, exploiting less corrosive reagents like boric acid and the corresponding phenols. The broad scope of this transformation is demonstrated in 22 examples. Several solid-state structures reveal the preferential conformation of the phenoxy moieties allowing cation interaction. Furthermore, a novel architecture of a phenoxy-substituted tetraborate
N-[(Amino)Alkyl]-1-pyrrolidine, 1-piperidine and 1-homopiperidinecarboxamides (and thiocarboxamides) with sulphur linked substitution in the 2, 3 or 4-position
申请人:A.H. ROBINS COMPANY, INCORPORATED
公开号:EP0160436A2
公开(公告)日:1985-11-06
Pyrrolidine, piperidine and homopiperidine- carboxamide and thiocarboxamide compounds of the formula:
wherein X is -S-, -S(0)- or -S(0)2-; A is a loweralkalene chain and A1 and A2 are alkalene chains when p and d are one; R, R1 and R2 are hydrogen, loweralkyl, phenyl cycloalkyl or phenylalkyl and R1 and R2 may form a heterocyclic residue with the adjacent nitrogen atom; Q is a selected aromatic radical, and the pharmaceutically acceptable acid addition salts are useful as cardiac antiarrhythmia agents.
Chemical intermediates, unsubstituted on pyrrolidine, piperidine and homopiperidine nitrogen but with the -(A2)p-X-(A2)d-Q side chain are also disclosed.