Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Sergey N Denisenko"'
Publikováno v:
ARKIVOC, Vol 2001, Iss 5, Pp 68-78 (2001)
Externí odkaz:
https://doaj.org/article/3fa263c354434ec085b3a31d8295b5bb
Publikováno v:
Materials Science and Engineering: A. 323:91-96
The effect of the melt-spinning processing variables such as wheel speed, gas ejection pressure and melt temperature on cooling rates measured by a thermoelectric technique has been investigated. It is found that cooling rates during melt spinning of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d95c24953609adbf3150d5017599148d
https://doi.org/10.1016/s0921-5093(01)01346-6
https://doi.org/10.1016/s0921-5093(01)01346-6
Publikováno v:
ARKIVOC, Vol 2001, Iss 5, Pp 68-78 (2001)
Substituted vinylbenzotriazoles were efficiently converted to benzotriazolyl epoxides by dimethyldioxirane. The behavior of these epoxides toward nucleophiles and strong bases was investigated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f42c742faf059d963c10cbb1f63140c8
https://doi.org/10.3998/ark.5550190.0002.509
https://doi.org/10.3998/ark.5550190.0002.509
Publikováno v:
Canadian Journal of Chemistry. 79:1655-1658
Proton and carbon NMR signals for 2-(benzotriazol-1-yl)tetrahydropyrans are assigned on the basis of spin decoupling, H,H-COSY, HETCOR, and nuclear Overhauser enhancement experiments. Conformational preferences are deduced. It was found that 2-(benzo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c2d1a280e4104f352d127aba4c2e423
https://doi.org/10.1139/v01-141
https://doi.org/10.1139/v01-141
Publikováno v:
The Journal of Organic Chemistry. 66:5585-5589
Dimethyldioxirane converted 1-alkylbenzotriazoles 4 to the corresponding 3-alkylbenzotriazole 1-oxides 5 in good yields, but transformed 2-alkylbenzotriazoles 12 into 2-alkyl-trans-4,5,6,7-diepoxy-4,5,6,7-tetrahydrobenzotriazoles 13.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5278a9521102631dd2fcacfa442a3f0
https://doi.org/10.1021/jo010194g
https://doi.org/10.1021/jo010194g
Publikováno v:
Tetrahedron. 57:3309-3314
Structural evidence for the existence of a ‘vinylogous’ anomeric effect is presented for a series of 4H-4-benzotriazolyl-2,6-diarylpyrans 1a,b and for their benzo-fused derivatives 2–5 and nitrogen analogue 6. X-Ray crystal structure analyses r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee6badbf0dc3ed874e056f2d828d3b04
https://doi.org/10.1016/s0040-4020(01)00218-6
https://doi.org/10.1016/s0040-4020(01)00218-6
Publikováno v:
Journal of Heterocyclic Chemistry. 37:1505-1510
3-Aryl-5-(benzotriazol-1-ylmethyl)- 10a-f and 3-p-methoxyphenyl-5-(α-benzotriazol-1-yl-α-ethoxymethyl)-isoxazole (13) were prepared in high yields by 1,3-dipolar cycloadditions of 1-propargyl-benzotriazole (5) and (α-ethoxypropargyl)benzotriazole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd6a72b2e5ab64727919b65fe0a4c960
https://doi.org/10.1002/jhet.5570370616
https://doi.org/10.1002/jhet.5570370616
Publikováno v:
Journal of Heterocyclic Chemistry. 37:1309-1314
A simple one-pot procedure for the regioselective synthesis of pyrazoles from readily available starting materials is described. Vilsmeier type reagent 1 reacts with imines 10 (via the corresponding tautomeric secondary enamines) in tetrahydrofuran t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66fd907bb1071c52bb356634390214c9
https://doi.org/10.1002/jhet.5570370548
https://doi.org/10.1002/jhet.5570370548
Publikováno v:
Journal of Heterocyclic Chemistry. 36:927-932
We describe an alternative approach to polycyclic phenanthridines (7) and some of their analogues using conditions much milder than those previously reported. The procedure includes the generation of a benzotriazole stabilized carbanion, oxidation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6c43c79deaad116dbc7b81e35819d0b
https://doi.org/10.1002/jhet.5570360417
https://doi.org/10.1002/jhet.5570360417
Publikováno v:
Journal für praktische Chemie. 341:152-158
2,6-Diaryl-4H-(benzotriazolyl)pyrans (7a-c) on treatment with n-butyllithium undergo smooth lithiation at the position α to the benzotriazolyl moiety. In contrast to fused and bridged pyranyl derivatives, these pyranyl anions react with electrophile
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b12503f05ef68b14ded50e879888d5e3
https://doi.org/10.1002/(sici)1521-3897(199902)341:2<152::aid-prac152>3.0.co
https://doi.org/10.1002/(sici)1521-3897(199902)341:2<152::aid-prac152>3.0.co