NMR Studies on Some Aldol Reaction Products
0
Citation
0
Reference
20
Related Paper
Abstract:
The structures of 5 aldol reaction products were determined by 1D NMR spectroscopy(~1 H NMR、~(13) C NMR、DEPT) and 2D NMR spectroscopy (~1 H-~1 H COSY、HSQC、HMBC、~1 H-~1 H NOESY). All the ~1 H and ~(13) C NMR data were assigned, and the varieties of chemical shifts with the position of the substitute of the compounds were discussed.Keywords:
DEPT
Carbon-13 NMR satellite
Aldol reaction
Chemical shift
Proton NMR
Cite
Abstract The 1 H and 13 C NMR chemical shifts of four 2,5‐diaryltetrahydrofuran derivatives and their dihydro precursors were assigned completely with certainty using a concerted application of one‐ and two‐dimensional experiments (DEPT, gs‐COSY, gs‐HMQC and gs‐HMBC) Copyright © 2006 John Wiley & Sons, Ltd.
Chemical shift
DEPT
Tetrahydrofuran
Cite
Citations (5)
The structures of 6 endo-isocamphanyl methanol and its derivatives were determined by 1D NMR spectroscopy (1HNMR,13CNMR,DEPT) and 2DNMR spectroscopy (1H-1HCOSY,HSQC,HMBC,1H-1HNOESY). All 1H NMR and 13C NMR data were assigned, and the influences on chemical shifts from the substituted groups were discussed. The NMR data of these compounds can be used as the reference for these series of compounds.
DEPT
Proton NMR
Carbon-13 NMR satellite
Chemical shift
Cite
Citations (0)
The structures of 6 endo-8-alkoxylmethylisocamphane derivatives were determined by 1 D-NMR spectroscopy(~1 H NMR、~(13) C NMR、DEPT) and 2 D-NMR spectroscopy (~1 H—~1 H COSY、HSQC、HMBC、~1 H—~1 H NOESY). All the ~1 H and ~(13)C NMR data were assigned, and the varieties of chemical shifts with the substitute of the compounds were discussed. The NMR data of these compounds can be used as the reference of these series compounds.
DEPT
Carbon-13 NMR satellite
Chemical shift
Proton NMR
Cite
Citations (0)
The procedures in the chemical reaction involving fluorine-containing lactones
were studied using two dimensional nuclear magnetic resonance techniques. The struc-
tures of the reaction intermediates and products were determined by ~1H NMR, ~(13) C
NMR, DEPT, ~1H-~1H COSY, HMQC and HMBC. The NMR methods provide powerful
tools for studying the mechanism of chemical reactions involving fluorine-containing lac-
tones.
DEPT
Fluorine
Chemical shift
Cite
Citations (0)
Cite
Citations (3)
Cite
Citations (1)
13C NMR chemical shifts were measured in DMSO-d6 for fluorocarbonyl compounds. Sulfonic derivatives display 4J(C,F) coupling constants for carbonyl groups which are also obtained from non-sulfonic derivatives when they are recorded in acidic solution. © 1998 John Wiley & Sons, Ltd.
Chemical shift
Coupling constant
Sulfonic acid
Cite
Citations (3)
The rare alkaloid casimiroedine and its peracetylated derivative both show complex 1H and 13C spectra with almost all signals doubled owing to slow rotation about the amide bond. Nevertheless, it is possible, using 2D NMR methods, to assign fully the 1H and 13C spectra of the major and minor conformational isomers for each compound. Copyright © 2000 John Wiley & Sons, Ltd.
Derivative (finance)
Amide
Cite
Citations (1)
The regiosomeric quinones 5-acetyloxymethyl-4,4,8-trimethyl- (5) and 8-acetyloxymethyl-4,4,5-trimethylanthracene-1,9,10(4H)-trione (6) were synthesized and their regiochemistry was assigned on the basis of the unambiguous structure elucidation of 9,10-dihydroxy-5-acetyloxymethyl-4,4,8-trimethyl-5,8-dihydroanthracen-1(4H)-one (2), the precursor of 5. The 1H and 13C NMR spectra of these compounds were assigned completely using two-dimensional techniques. These interpretations were used for the total assignment of the NMR spectra of the closely related 5-hydroxymethyl- and 5-formyl-4,4,8-trimethylanthracene-1,9,10(4H)-triones (7 and 8, respectively). Copyright © 1999 John Wiley & Sons, Ltd.
Hydroxymethyl
Proton NMR
Cite
Citations (6)
Chemical shift
Thiopyran
Proton NMR
DEPT
Cite
Citations (3)