ISSN:
0009-2940
Keywords:
Borane, [(di-tert-butylphosphanyl)imino](2,2,6,6-tetramethylpiperidino) dimer
;
Phosphonium, di-tert-butylmethyl[(2,2,6,6-tetramethylpiperidinoborylene)imino]iodide
;
Haloboration
;
Hydroboration
;
Metal carbonyl complexes of [(di-tert-butylphosphanyl)imino](2,2,6,6-tetramethylpiperidino)borane
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The elements oxygen, sulfur, and selenium add to the P atom of the title borane 1. In contrast to the formation of tmp—B≡N—P(X)tBu2 (X = S, Se), the P oxide (X = O) dimerizes to [tmp—B≡N—P(O)tBu2]2 (5) with an eight-membered flat boat-shaped B2N2P2O2 ring. Borane 1 reacts readily with Mel to yield a phosphonium salt 8 and with BBr3 to give an adduct 9 with a B—P bond. In contrast, bis(dichloroboryl)-methane not only adds to 1 to generate a coordinate B—P bond but also chloroborates the B≡N triple bond, the final product being a new five-membered heterocycle 10. Similarly, the BH3 component of BH3·SMe2 first adds to the P atom of 1 followed by reaction of a second mol of BH3·SMe2 which hydroborates the B≡N triple bond. Finally, metal carbonyl fragments add only to the P atom of 1, demonstrating also that the chemistry of the molecule 1 is dominated by the basicity of its P center.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19951280302
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