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Synthese und Eigenschaften von 1,2,4,3‐Thiadiazaboretidinen. Kristallstruktur des 2,4‐Di‐ tert ‐butyl‐3‐phenyl‐1,2,4,3‐thiadiazaboretidins
Author(s) -
Habben Carl D.,
Heine Andreas,
Sheldrick George M.,
Stalke Dietmar,
Bühl Michael,
Schleyer Paul Von R.
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911240108
Subject(s) - chemistry , boranes , crystal structure , mass spectrum , cycloaddition , stereochemistry , x ray crystallography , alkyl , chemical shift , medicinal chemistry , aryl , crystallography , mass spectrometry , organic chemistry , boron , catalysis , physics , chromatography , diffraction , optics
Synthesis and Properties of 1,2,4,3‐Thiadiazaboretidines. Crystal Structure of 2,4‐Di‐ tert ‐butyl‐3‐phenyl‐1,2,4,3‐thiadiazaboretidine Reaction of sulfur diimides with alkyl(aryl)bis(methylthio)boranes leads to reductive 1,3‐cycloaddition of the NSN sequence with formation of the 1,2,4,3‐thiadiazaboretidines 2a ‐ g . NMR ( 1 H, 11 B, 13 C, 15 N, 29 Si), mass spectra and the results of the X‐ray analysis of 21 are reported and discussed. The 11 B chemical shifts have been calculated for 3‐phenyl‐1,2,4,3‐thiadiazaboretidine and some related model compounds by the IGLO method and correlate acceptably with the experimental values.