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31.
Z. R. Valiullina N. P. Akhmetdinova N. A. Ivanova O. V. Shitikova M. S. Miftakhov 《Russian Journal of Organic Chemistry》2011,47(2):180-184
Proceeding from the [2+2]-adduct of dichloroketene and dimethylfulvene a synthesis was developed of methyl (5Z)-7-(2,2-dimethyl-4-oxo-1-oxaspiro[2.4]hept-6-en-5-yl)hept-5-enoate, the key block in the new synthetic approach to 15-deoxy-Δ12,14-prostaglandin J2. 相似文献
32.
F. A. Valeev L. Kh. Kalimullina Sh. M. Salikhov O. V. Shitikova I. P. Tsypysheva M. G. Safarov 《Chemistry of Natural Compounds》2004,40(6):521-525
2-Amino derivatives of levoglucosenone were prepared by reaction of the 2-methanesulfonyl (or p-toluenesulfonyl) derivatives with ammonia, methylamine, or octylamine under various conditions. The analogous reaction did not occur for saturated derivative 15. The 2-amino-3,4-dihydro derivative was prepared by catalytic hydrogenation of unsaturated amine 9.Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 429–432, November–December, 2004.This revised version was published online in April 2005 with a corrected cover date. 相似文献
33.
N. A. Ivanova Z. R. Valiullina O. V. Shitikova E. G. Galkin D. V. Lyubetskii M. S. Miftakhov 《Russian Journal of Organic Chemistry》2006,42(10):1435-1439
Treatment of 2,3,5-trichloro-5-[(E)-2,3-diiodoprop-1-en-1-yl]-4,4-dimethoxycyclopent-2-en-1-one with SmI2 in THF gives 5,5′-[(1E,5E)-2,5-diiodohexa-1,5-diene-1,6-diyl]bis(2,3-dichloro-4,4-dimethoxycyclopent-2-en-1-one) and its meso form at a ratio of 3:1. 相似文献
34.
R. R. Gataullin R. R. Ishberdina O. V. Shitikova F. F. Minnigulov L. V. Spirikhin I. B. Abdrakhmanov 《Chemistry of Heterocyclic Compounds》2006,42(8):1025-1031
Halocyclization of mesylates or tosylates of 2-(cycloalk-2-en-1-yl)anilines gives N-methanesulfonyl-or N-toluenesulfonyl-1-halo-1,2,3,4,4a,9a-hexahydrocarbazoles,
heating of which in DMF at 160°C or in piperidine at 110°C leads to 4,4a,9,9a-tetrahydro-3H-carbazoles. Heating N-methanesulfonyl-1-iodo-1,2,3,3a,4,8b-hexahydrocyclopenta[b]indole
in DMF at 180—200°C gives 1,3a,4,9b-tetrahydrocyclopenta[b]indole, while in the presence of an ortho-methyl substituent the
dehydroiodination reaction proceeds in piperidine at 110°C in high yield. The effect of the nature of the ortho substituent
of N-methyl-1-iodo-1,2,3,3a,4,8b-hexahydrocyclopenta[b]indole on the conformational equilibrium of the cyclopentane ring has
been established by 1H NMR spectroscopy.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1184–1190, August, 2006. 相似文献
35.
N. A. Ivanova Z. R. Valiullina O. V. Shitikova M. S. Miftakhov 《Russian Journal of Organic Chemistry》2006,42(11):1701-1705
Methyl (1S,2S,3R,4R)-2,3-isopropylidenedioxy-5-iodomethyl-2-tetrahydrofurylacetate prepared in two stages from D-ribose acetonide underwent a series of uncommon transformations under the treatment with bases providing the following different products depending on the base applied: methyl 3-(5-acetyl-2,2-dimethyl-1,3-dioxol-4-yl)propionate (DBU), methyl 2,3-isopropylidenedioxy-7-oxabicyclo[2.2.1]heptane-6-carboxylate (t-BuOK), methyl {(5R)-2,2-dimethyl-5-[(2R)-oxiranyl]-1,3-dioxolan-4-ylidene}propionate and methyl-(E)-3-{(4S,5R)-2,2-dimethyl-5-[(1R)-(2-oxiranyl)]-1,3-dioxolan-4-yl}-2-propenoate (t-BuOK and LDA). 相似文献
36.
N. G. Goncharova F. A. Zhivopistsev K. V. Shitikova 《Czechoslovak Journal of Physics》1981,31(4):367-382
The complication effects in the highly-excited state structure (impurity of the complex configurations of the 2p2h type) of the (, n), (e, e) and (–, ) nuclear reactions with the40Ca nucleus have been studied in terms of the ph-approximation including the following effects: (a) the presence of states of the two particles — two holes type, (b) rigidity loss by nucleus in excited state. 相似文献
37.
Ivanova N. A. Shainurova A. M. Khusainova A. A. Shitikova O. V. Akhmetvaleev R. R. Miftakhov M. S. 《Russian Journal of Organic Chemistry》2002,38(4):491-493
By reaction of 6,7-dichloro-1,4-dioxaspiro[4.4]non-6-en-8-one with NaI and LiBr in boiling acetylacetone or methyl butyl ketone the corresponding 3-iodo and 3-bromo derivatives of cyclopentenone were prepared. 相似文献
38.
R. A. Khisamutdinov G. R. Anpilogova O. V. Shitikova Yu. I. Murinov 《Russian Journal of Inorganic Chemistry》2016,61(12):1530-1537
Platinum(II) and platinum(IV) chloro complexes with (RS)-1-(4-chlorophenyl)-4,4-dimethyl-3-(1Н-1,2,4-triazol-1-ylmethyl)pentan-3-ol (L), namely, cis-[PtCl2L2], trans-[PtCl2L2], and trans-[PtCl4L2], were synthesized. The structures of their coordination cores and the coordination mode of the reagent to the metal ions via the N(4) atom of the triazole ring were determined by electronic, IR, and NMR 1H and 13C spectroscopy. The ratio between treo and erythro diastereomers and the conformation of reagent L in the complexes were established from the complete assignment of signals in their NMR spectra. 相似文献
39.
A. V. Orlov G. R. Khazipova N. G. Komissarova O. V. Shitikova L. V. Spirikhin M. S. Yunusov 《Chemistry of Natural Compounds》2011,46(6):906-909
Lupane-type triterpenoid derivatives containing a 2,3-annelated 1H-pyrrole or an N-vinylpyrrole moiety were synthesized by reaction of 28-OTr-lup-20(29)-en-3-one oxime and acetylene in KOH/DMSO superbase medium at atmospheric pressure. 相似文献
40.
R. R. Akhmetvaleev G. M. Baibulatova I. F. Nuriev O. V. Shitikova M. S. Miftakhov 《Russian Journal of Organic Chemistry》2001,37(8):1083-1087
Analog of chlorvulone II containing an extra chlorine atom at C11 was synthesized starting with 1,4-dioxa-6,7-dichlorospiro[4.4]non-6-ene. 相似文献