ChemInform Abstract: NMR STUDY OF ORGANOSILICON COMPOUNDS PART 2, CARBON-13 AND SILICON-29 NMR SPECTRA OF SUBSTITUTED PHENYLSILANES

1975 ◽  
Vol 6 (24) ◽  
Author(s):  
J. SCHRAML ◽  
V. CHVALOVSKY ◽  
M. MAEGI ◽  
E. LIPPMAA
Keyword(s):  
Nmr Spectra ◽  
Organosilicon Compounds ◽  
Nmr Study

NMR study of organosilicon compounds. III—Silicon-29, nitrogen-14, carbon-13 and proton NMR spectra of silylakylamines

1975 ◽  
Vol 7 (8) ◽  
pp. 379-385 ◽  
Author(s):  
J. Schraml ◽  
Nguyen-Duc-Chuy ◽  
V. Chvalovský ◽  
M. Mägi ◽  
E. Lippmaa
Keyword(s):  
Nmr Spectra ◽  
Proton Nmr ◽  
Organosilicon Compounds ◽  
Nmr Study

A 15N, 13C, and 1H NMR study of reaction products from arylguanidines and chloroformate esters

1991 ◽  
Vol 56 (7) ◽  
pp. 1505-1511 ◽  
Author(s):  
Antonín Lyčka ◽  
Karel Palát
Keyword(s):  
1H Nmr ◽  
Nmr Spectra ◽  
Reaction Products ◽  
H Nmr ◽  
Nmr Study

The 15N, 13C, and 1H NMR spectra of the reaction products from arylguanidines with two mols of chloroformate esters have been measured. With application of the corresponding 15N isotopomer it has been proved that the reaction products have the structures IIIa-IIIc.

scholarly journals Trifluoroacetylation of Alcohols During NMR Study of Compounds with Bicyclo[2.2.1]heptane, Oxabicyclo[3.3.0]octane and Bicyclo[3.3.0]octane Skeleton

2021 ◽  
Vol 72 (2) ◽  
pp. 156-177
Author(s):  
Constantin I. Tanase ◽  
Anamaria Hanganu ◽  
Constantin Draghici
Keyword(s):  
Nmr Spectra ◽  
Cyclopropane Ring ◽  
Secondary Alcohol ◽  
Primary Alcohol ◽  
1H And 13C Nmr ◽  
Alcohol Group ◽  
Nmr Study ◽  
Group A ◽  
Graphical Presentation ◽  
Nmr Signals

TFA was added to a solution of a bicyclo[2.2.1]heptane azide-alcohol in CDCl3 to correctly characterize the compound, but during 24 h gave the trifluoro acetylated compound in quantitative yield. NMR spectra of the esterified compound helped us also to correctly attribute the NMR signals to the protons, and also confirmed the identification of the carbon atoms. The study was extended to other 14 compounds containing a primary alcohol group alone or with an ethylene ketal, a δ- or -lactone group, a primary and a secondary group, two primary and an alkene group and two primary and a secondary alcohol groups on scaffolds containing bicyclo[2.2.1]heptane, oxabicyclo[3.3.0]octane, bicyclo [2.2.1]heptane constrained with a cyclopropane ring and bicyclo[3.3.0]octane fragments. The esterification of all compounds was also quantitative in 24 to 72 h; this helped us to correct attribute the NMR signals to the protons and carbon atoms of the un-esterified compounds by comparison with those of the trifluoro acetylated compounds. A graphical presentation of 1H- and 13C-NMR spectra of a few un-esterified and esterified compounds are presented in the paper.

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