<sup>13</sup>C NMR Study of 3,9‐di(alkylphenoxy) ‐2,4,8,10‐tetraoxa‐3,9‐diphosphaspiro[5.5]undecanes

Pätoprstý, V.; Malík, Ľ.; Goljer, Igor; Göghova, M.; Karvaš, M.; Durmis, J.

doi:10.1002/mrc.1260230215

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Their signal appeared as a doublet due to their long range coupling with phosphorus 11 . The doublets observed in the region δ 126.9-129.3 [V = 2.0-4.6 Hz] and δ 128.8-132.0 f-Wcc-ui) = 1-6-3.1 Hz] were attributed to C(2), C(10) and C(l), C(11), respectively 12 . The doublets observed in the region δ 126.9-129.3 [V = 2.0-4.6 Hz] and δ 128.8-132.0 f-Wcc-ui) = 1-6-3.1 Hz] were attributed to C(2), C(10) and C(l), C(11), respectively 12 .…”

Section: Methodsmentioning

confidence: 95%

A FACILE SYNTHESIS, SPECTRAL (IR, 1H, 13C & 31P NMR) CHARACTERISTICS AND ANTIMICROBIAL ACTIVITY OF 6-ARYLOXY/ARYLTHIO/ALKYLAMINO DIBENZO [d,f] [1,3,2]-DIOXAPHOSPHEPIN 6-SULFIDES

Kumar¹,

Reddy²,

Nagaraju³

2003

Heterocyclic Communications

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A series of 6-aryloxy/arylthio/alkylamino dibenzo [d,f][l,3,2J-dioxaphosphepin 6-sulfides (4Ϊ were synthesized with a two step process with moderate yields starting from 2,2N-aihydroxybiphenyl (1) and thiophosphoryl chloride (2). Initially, the intermediate 6-cnloro dibenz<^d,fl[l,3,21-dioxaphosphepm 6-sulfide (3) was obtained which on subsequent reaction with substituted phenols/thiopnenols/ alkylamines in the presence of triethylamine at 50-55°C in dry toluene afforded members of 4. Their chemical structures were confirmed by elemental, IR and H, C, Ρ NMR spectral data analysis. The compounds were screened for antifungal activity against Curvularia lunata and Aspergillus nieer and for antibacterial activity against Bacillus subtilis ana Escherichia coli. Some of them possessed significant activity.Brought to you by | University of Arizona Authenticated Download Date | 5/30/15 5:59 AM

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Section: Methodsmentioning

confidence: 95%

A FACILE SYNTHESIS, SPECTRAL (IR, 1H, 13C & 31P NMR) CHARACTERISTICS AND ANTIMICROBIAL ACTIVITY OF 6-ARYLOXY/ARYLTHIO/ALKYLAMINO DIBENZO [d,f] [1,3,2]-DIOXAPHOSPHEPIN 6-SULFIDES

Kumar¹,

Reddy²,

Nagaraju³

2003

Heterocyclic Communications

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12H‐dibenzo[d,g][1,3,2]dioxaphosphocins: Synthesis, structures and “through‐space” spin‐spin coupling in their NMR spectra

Goddard

Payne

Cook

et al. 1988

Journal of Heterocyclic Chem

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A series of 12H‐dibenzo[d,g][1,3,2]dioxaphosphocins has been prepared by the reactions of bisphenols with either ethyl phosphorodichloridate or phosphorus pentasulfide. The structures of a pair of cis and trans isomers in this series were elucidated by X‐ray crystallography. Both isomers adopt the boat‐chair conformation in the solid state with the bulky group at C‐12 in the pseudo‐equatorial position. Some flattening of the heterocyclic ring due to the pseudo‐axial ethoxy group was observed in the cis isomer. A novel transannular cyclisation reaction was observed in the mass spectra of the cis isomers and this has allowed us to assign the configurations of all the isomers in the series. The pmr spectra of the compounds have been explained in terms of the rigid boat‐chair conformation; however, as bulky groups were introduced at C‐12, signs of mobility were observed for the cis isomers and an equilibrium was established with mobile boat forms. A stereospecific long‐range coupling between P and the proton at C‐12 could be transmitted “through space” by the antiperiplanar lone‐pair electrons on the ring oxygen atoms.

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Effect of intumescence on polymer degradation

Marchal

Delobel

Bras

et al. 1994

Polymer Degradation and Stability

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¹³C NMR Study of 3,9‐di(alkylphenoxy) ‐2,4,8,10‐tetraoxa‐3,9‐diphosphaspiro[5.5]undecanes

Cited by 4 publications

References 7 publications

A FACILE SYNTHESIS, SPECTRAL (IR, 1H, 13C & 31P NMR) CHARACTERISTICS AND ANTIMICROBIAL ACTIVITY OF 6-ARYLOXY/ARYLTHIO/ALKYLAMINO DIBENZO [d,f] [1,3,2]-DIOXAPHOSPHEPIN 6-SULFIDES

A FACILE SYNTHESIS, SPECTRAL (IR, 1H, 13C & 31P NMR) CHARACTERISTICS AND ANTIMICROBIAL ACTIVITY OF 6-ARYLOXY/ARYLTHIO/ALKYLAMINO DIBENZO [d,f] [1,3,2]-DIOXAPHOSPHEPIN 6-SULFIDES

12H‐dibenzo[d,g][1,3,2]dioxaphosphocins: Synthesis, structures and “through‐space” spin‐spin coupling in their NMR spectra

Effect of intumescence on polymer degradation

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13C NMR Study of 3,9‐di(alkylphenoxy) ‐2,4,8,10‐tetraoxa‐3,9‐diphosphaspiro[5.5]undecanes

Cited by 4 publications

References 7 publications

A FACILE SYNTHESIS, SPECTRAL (IR, 1H, 13C & 31P NMR) CHARACTERISTICS AND ANTIMICROBIAL ACTIVITY OF 6-ARYLOXY/ARYLTHIO/ALKYLAMINO DIBENZO [d,f] [1,3,2]-DIOXAPHOSPHEPIN 6-SULFIDES

A FACILE SYNTHESIS, SPECTRAL (IR, 1H, 13C & 31P NMR) CHARACTERISTICS AND ANTIMICROBIAL ACTIVITY OF 6-ARYLOXY/ARYLTHIO/ALKYLAMINO DIBENZO [d,f] [1,3,2]-DIOXAPHOSPHEPIN 6-SULFIDES

12H‐dibenzo[d,g][1,3,2]dioxaphosphocins: Synthesis, structures and “through‐space” spin‐spin coupling in their NMR spectra

Effect of intumescence on polymer degradation

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¹³C NMR Study of 3,9‐di(alkylphenoxy) ‐2,4,8,10‐tetraoxa‐3,9‐diphosphaspiro[5.5]undecanes