N-sulfinylacylamides R-C(ϭO)-NϭSϭO react with (CF 3 ) 2 BNMe 2 (1) to form, by [2ϩ4] cycloaddition, six-membered rings cyclo-(CF 3 ) 2 B-NMe 2 -S(ϭO)-NϭC(R)-O for R ϭ Me (2), t-Bu (3), C 6 H 5 (4), and p-CH 3 C 6 H 4 (5) while N-sulfinylcarbamic acid esters R-O-C(ϭO)-NϭSϭO react with 1 to yield mixt
Reactions of (CF3)2BNMe2 with ω-Halonitriles — Crystal and Molecular Structure of [cyclo-C3H4(CN)](CF3)2B·NHMe2
✍ Scribed by Brauer, David J. ;Bürger, Hans ;Dittmar, Thomas ;Pawelke, Gottfried
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1996
- Tongue
- English
- Weight
- 454 KB
- Volume
- 129
- Category
- Article
- ISSN
- 0009-2940
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Dimethyl-2,2-bis(trifluoromethyl)azoniaboratacyclo-HC(N 2 )C(=O)OtBu react with 1 to form three-membered rings, which hydrolyze rapidly to form Me 2 NH-CR 1 R 2 -propanes, cyclo-(F 3 C)
Trimethylamine-bis(trifluoromethyl) boranes R(CF 3 ) 2 B ´NMe 3 (R = cis/trans-CF 3 CF=CF (1/2), HCºC (3), H 2 C=CH (4), C 2 H 5 (5), C 6 H 5 CH 2 (6), C 6 F 5 (7), C 6 H 5 (8)) react with NEt 3 ´3 HF depending on the nature of R at 155±200 °C under replacement of the trimethylamine ligand to form
The title compound has been synthesised, and characterised by multinuclear magnetic resonance spectroscopy, both in solution and in the solid state. The bandshapes of variabletemperature solution-state 19 F NMR spectra have been iteratively fitted to obtain information on the kinetics of rotation ab