1-Carba-arachno-pentaborane(10) Derivatives

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Title:1-Carba-arachno-pentaborane(10) Derivatives
Creators:
Wrackmeyer, Bernd
Schanz, Hans-Jörg
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 62, 8, pp. 1254-1262
Uncontrolled Keywords:Hydroboration, Boranes, propyn-1-yl, vinyl, NMR, <sup>11</sup>B, <sup>13</sup>C, Exchange reactions, Et<sub>2</sub>BH-catalyzed, Carboranes

Abstract

The formation of organo substituted 1-carba-<i>arachno</i>-pentaborane(10) derivatives is shown to proceed in high yield <i>via in situ</i> generated 1,1,1-tris(diethylboryl)propane (<strong>2</strong>) from diethyl(propyn-1-yl)borane (<strong>1</strong>) by hydroboration with an excess of diethylborane (hydride bath). In the hydride bath, exchange reactions between <strong>2</strong> and other geminal bis(diethylboryl)alkanes take place until the carbaborane skeleton is formed. If tris(diethylboryl)methane is used under the same conditions, the corresponding 1-carba-<i>arachno</i>-pentaborane(10) derivatives <strong>11</strong> and <strong>12</strong> are formed in mixture with other unknown boranes or carboranes. <sup>11</sup>B and <sup>13</sup>C NMR data are presented to allow for straightforward identification of the 1-carba-<i>arachno</i>-pentaboranes(10).

Title:1-Carba-arachno-pentaborane(10) Derivatives
Creators:
Wrackmeyer, Bernd
Schanz, Hans-Jörg
Uncontrolled Keywords:Hydroboration, Boranes, propyn-1-yl, vinyl, NMR, <sup>11</sup>B, <sup>13</sup>C, Exchange reactions, Et<sub>2</sub>BH-catalyzed, Carboranes
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:62
Number:8
Page Range:pp. 1254-1262
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19971254UNSPECIFIED
ID Code:1204
Item Type:Article
Deposited On:06 Feb 2009 17:07
Last Modified:06 Feb 2009 16:07

Citation

Wrackmeyer, Bernd; Schanz, Hans-Jörg (1997) 1-Carba-arachno-pentaborane(10) Derivatives. Collection of Czechoslovak Chemical Communications, 62 (8). pp. 1254-1262. ISSN 0010-0765

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