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Hydrolysis of Pyrryl‐1‐borates
Author(s) -
Emri J.,
Györi B.,
Szarvas P.
Publication year - 1973
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19734000311
Subject(s) - hydrolysis , chemistry , boron , borane , aqueous solution , electronegativity , medicinal chemistry , inorganic chemistry , reaction rate constant , hydrogen bond , ion , boranes , catalysis , kinetics , organic chemistry , molecule , physics , quantum mechanics
Detailed studies have been made on the hydrolysis of Na[BPh n Pyl 4‐n ] type (where PhC 6 H 5 , PylC 4 H 4 N, n = 0, 1, 2. 3) pyrryl‐1‐borates in aqueous buffer solution. The hydrolysis of pyrryl‐1‐borates is a kinetically second‐order reaction and is catalysed by hydrogen ions. The rate constant‐ and ΔH≠values of pyrryl‐1‐borates considerably depend on the electronegativities of the substituents. The hydrolytic stability of the B‐‐Pyl bond was compared with that of other BX bonds (XH, C 6 H 5 , CH 3 COO). In the hydrolysis of pyrryl‐1‐borates the corresponding borane and pyrrole are formed directly.