Journal article
The Ullmann Coupling Reaction: A New Approach to Tetraarylstannanes
Organometallics, Vol.25(17), pp.4207-4214
08/14/2006
DOI: 10.1021/om060456a
Abstract
Several iodobenzenes form tetraarylstannanes, in addition to other products, under reaction conditions typically employed for the Ullmann reaction, i.e., activated copper bronze (a copper−tin alloy) and 7 days at 230 °C. The isolated yields of the tetraarylstannanes were low to good (8−58%). Significantly higher yields (54−64%) of tetraphenylstannane were obtained by the direct reaction of iodobenzene with an excess of tin powder (iodobenzene:tin = 1:1 w/w) under the same conditions. Crystal structure analysis reveals that tetrakis(4-carbomethoxyphenyl)stannane crystallizes in a tetragonal space group and has 4̄ symmetry, which is the case for many symmetrical tetraarylstannanes. However, tetrakis(2,4-dichlorophenyl)stannane, tetrakis(3,4-dichlorophenyl)stannane, and tetrakis(2,4-dimethylphenyl)stannane do not crystallize in a tetragonal space group and do not have real 4̄ symmetry.
Details
- Title: Subtitle
- The Ullmann Coupling Reaction: A New Approach to Tetraarylstannanes
- Creators
- Nadim S ShaikhSean ParkinHans-Joachim Lehmler
- Resource Type
- Journal article
- Publication Details
- Organometallics, Vol.25(17), pp.4207-4214
- DOI
- 10.1021/om060456a
- ISSN
- 0276-7333
- eISSN
- 1520-6041
- Publisher
- American Chemical Society
- Language
- English
- Date published
- 08/14/2006
- Academic Unit
- Occupational and Environmental Health; Iowa Neuroscience Institute
- Record Identifier
- 9984000920802771
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