A 13C NMR study on some phenylborane derivatives
β Scribed by B.R. Gragg; W.J. Layton; K. Niedenzu
- Book ID
- 108354089
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 554 KB
- Volume
- 132
- Category
- Article
- ISSN
- 0022-328X
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## Abstract A series of isoalloxazine and alloxazine derivatives have been investigated by ^13^CβNMR. The synthesis of selectively ^13^Cβenriched derivatives made it possible to assign unambiguously the signals due to the quaternary carbon atoms at position 4, 4a and 10a of the isoalloxazine ring s
Because of the upsurge of interest in polychlorobuta-1,3-diene derivatives as uncommon contaminants in underground water, seven congeners, the three pentachloro-and four tetrachloro-[(Z)-and (E)-1,1,3,4tetrachloro-, 1,1,4,4-tetrachloro-and (Z,Z)-1,2,3,4-tetrachloro]buta-1,3-dienes, were synthesized