<sup>13</sup>CNMR study of poly (4‐vinyltriazole). Direct observation of the three tautomers

Toppet, Suzanne; Wouters, G.; Smets, G.

doi:10.1002/pol.1976.130140702

Cited by 11 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These intermolecular associations were further studied in detail by 1 H and 13 C NMR measurements. 17 The copolymerizations of 4(5)-vinyl-1,2,3-triazole 3 and 1-pbromophenyl-4-vinyl-1,2,3-triazole 7 with styrene (St), methyl methacrylate (MMA) and vinyl acetate (VOAc) were further investigated in DMF or CHCl 3 at 65 C in presence of AIBN (Scheme 18). 1 Determination of the reactivity ratios for each comonomer system stressed a tendency toward alternation for MMA and St (3/St, r 1 ¼ 0.55, r 2 ¼ 1.44; 3/MMA, r 1 ¼ 0.29, r 2 ¼ 0.83; 7/St, r 1 ¼ 0.67, r 2 ¼ 1.24; 7/MMA, r 1 ¼ 0.29, r 2 ¼ 0.84) whereas only limited incorporation of VOAc was observed for the copolymerization with 7 (7/VOAc, r 1 ¼ 39, r 2 ¼ 0.007).…”

Section: Conventional Radical (Co)polymerization Of 4-vinyl-123triazolesmentioning

confidence: 99%

Synthesis and polymerization of C-vinyl- and N-vinyl-1,2,3-triazoles

et al. 2012

View full text Add to dashboard Cite

Section: Conventional Radical (Co)polymerization Of 4-vinyl-123triazolesmentioning

confidence: 99%

Synthesis and polymerization of C-vinyl- and N-vinyl-1,2,3-triazoles

et al. 2012

View full text Add to dashboard Cite

Synthesis and Thermal Decomposition of 4‐Azidoisoxazoles

L'abbé

Godts

1987

Bulletin des Soc Chimique

View full text Add to dashboard Cite

ABSTRACT.give a-cyanodiazoketones 2 . L and, in the case of fi, also the N- We will also discuss the mechanism of decomposition of REACTION PRODUCTS When the aminoisoxazoles &,b were diazotized with sodium nitrite in hydrochloric acid at 0 -5OC, and then treated with sodium azide, the expected azidoisoxazoles 2 , p were obtained in only small amounts (ranging from 0 to 8 % ) .The major products of the reactions were found to be the a-cyanodiazoketones -3a,b and, in the case of 2, also the N-hydroxytriazole 1.In order to optimize the yields of &,a the reaction conditions were varied, including a change of solvent, nitrosation reagent and temperature. The best results were obtained when the diazotization was carried out at a temperature between -15 and -lO°C, yielding 30% of &,k under the conditions described in the Experimental Section (Method B).-229 -

show abstract

Molecular Rearrangements of 1h‐1,2,3‐Triazoles and 1,2,3‐Thiadiazoles

L'abbé

1990

Bulletin des Soc Chimique

View full text Add to dashboard Cite

h o l e s are five-membered ring heterocycles which may be considered as ring-closed forms of conjugated 1,9dipoles (Scheme l).' The equilibrium positions are usually shifted towards the aromatic compounds, except for a-diazoketones (or esters) and acyl azides (6 and 8, X = 0) of which the corresponding heterocycles are unknown.* a-Diazothioketones and thioacyl azides, on the contrary, only exist as transient intermediates which cyclize to thiadiazoles and thiatriazoles respectively (5 and 7, X = S).3 lminodiazomethanes and iminoazides (6 and 8, X = NR) most often cyclize to triazoles and tetrazoles (5 and 7, X = NR), but they can be stabilized in the open-chain form by introducing strong electron-withdrawing substituents at the imine n i t r~g e n .~

show abstract

¹³CNMR study of poly (4‐vinyltriazole). Direct observation of the three tautomers

Cited by 11 publications

References 13 publications

Synthesis and polymerization of C-vinyl- and N-vinyl-1,2,3-triazoles

Synthesis and polymerization of C-vinyl- and N-vinyl-1,2,3-triazoles

Synthesis and Thermal Decomposition of 4‐Azidoisoxazoles

Molecular Rearrangements of 1h‐1,2,3‐Triazoles and 1,2,3‐Thiadiazoles

Contact Info

Product

Resources

About

13CNMR study of poly (4‐vinyltriazole). Direct observation of the three tautomers

Cited by 11 publications

References 13 publications

Synthesis and polymerization of C-vinyl- and N-vinyl-1,2,3-triazoles

Synthesis and polymerization of C-vinyl- and N-vinyl-1,2,3-triazoles

Synthesis and Thermal Decomposition of 4‐Azidoisoxazoles

Molecular Rearrangements of 1h‐1,2,3‐Triazoles and 1,2,3‐Thiadiazoles

Contact Info

Product

Resources

About

¹³CNMR study of poly (4‐vinyltriazole). Direct observation of the three tautomers