Grignard compounds (organomagnesium halides) are among the longest-known organometallic reagents and have found a plethora of applications in organic synthesis. [2] In particular, they are used for additions to polarized or polarizable carbon-heteroatom multiple bonds. However, they are less suitabl
Structure of 2,4,6-Tri-tert-butyl-1,3,5-triphosphabenzene and of 2,4-Di-tert-butyl-1,3-diphosphabenzene: X-ray Analysis, Photoelectron Spectra and Molecular Orbital Calculations
✍ Scribed by Rolf Gleiter; Holger Lange; Paul Binger; Jörg Stannek; Carl Krüger; Joachim Bruckmann; Ulrich Zenneck; Susanne Kummer
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 184 KB
- Volume
- 1998
- Category
- Article
- ISSN
- 1434-1948
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## Dedicated to Professor G. Wittig in grateful appreciation on his 75th birthday Oxygenation of heterocycles by singlet oxygen produced by photosensitization"] has recently excited great interest''].
6-Tri-tert-butyl-1,3,5-triphosphabenzene 4 reacts with to the 1,3,4,7-tetraphosphasemibullvalene derivative 10 as the only product. The single-crystal X-ray analysis of 10 phosphaalkynes PϵCϪR [R = tBu (5a), tPen (5b)] at room temperature in a formal [4 + 2] cycloaddition to yield the exhibits a dip
A photochemical precursor to a pendant conjugated polyradical has been synthesized, poly [3,5-di-tert-butyl-4-[(2,4,6-tri-tert-butylphenyl)oxalato]phenylacetylene], 3. Irradiation of 3 at 77 K in the solid state at õ 300 nm yielded poly(3-5-ditert-butyl-2-oxyphenyl acetylene), 2, with 30-40% of the