1,8-二羟基-9,10-二氢蒽的合成

以1,8-二羟基蒽醌为原料,经甲醚化,锌粉和金属钠还原,去甲基等4步反应合成1,8-二羟基-9,10-二氢蒽,总产率为37.1,8-二甲氧基蒽醌用NaBH₄/CF₃COOH还原生成二聚产物,并测定了其单晶结构.     

Ultraviolet spectrophotometric method for the determination of anthracene,naphthalene and pyrene in coal tars

A rapid method determination of the abovemetioned three compounds directly in coal tar solutions has been developed, using a baseline technique λ_max = 376, 335 and 220 nm, respectively. In the case of anthracene the standard addition method and first derivative spectra were used. The precision of the results was calculated. The accuracy of the method was evaluated by comparison of the results obtained by means of different instrumental techniques for coal tar and its fraction.     

Generation of Singlet Diatomic Sulfur from 9,10-Epidithio-9,10-dihydroanthracene

The novel 9,10-epidithio-9,10-dihydroanthracene ( ) was formed as an intermediate in the reaction of 9,10-dihydro-9,10-(1,3-epidithio-2-methano- 2-p-methoxyphenyl-1-oxide)propanoanthracene ( ) with perchloric acid. Singlet diatomic sulfur was generated from endodisulfide and trapped with conjugated dienes.     

Chemiluminescence in the oxidation of organometallic compounds of sodium with naphthalene,anthracene, and pyrene by XeF2

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2649–2650, November, 1989.     

Structure of a 1:1 molecular complex of trans-9,10-dihydroxy-9,10-diphenyl-9,10-dihydroanthracene with ethanol

X-ray analysis of the title complex revealed hydrogen-bonded chains comprising two crystallographically independent types of $\text{trans}$-9,10-dihydroxy-9,10-diphenyl-9,10-dihydroanthracene molecules, in which the central 1,4-cyclohexadiene rings are respectively flat and very slightly puckered, with the ethanol molecules attached exclusively to the latter type.     

致癌性多环芳烃萘、蒽、芘的分析方法比较

利用薄层色谱（TLC）、紫外光谱（UV）、反相高效液相色谱（RPHPLC）对多环芳烃（PAHs）萘、蒽、芘的分析方法进行了研究。TLC中使用环己烷：氯仿（5：4,V／V）作为展开剂时,三者的R,值分别为0．78、0．65和0．72;用UV法在溶液中测定了三者的最大吸收波长分别为303、380、338nm;当流动相为甲醇：水（9：1,V／V）时三者在RP—HPLC中的保留时间为4．179、5．190、6．178min,5次重复RSD分别为1．1％、1．8％、0．91％,并用于实际水样中萘、蒽、芘的分析。     

Energetic effects of ether and ketone functional groups in 9,10-dihydroanthracene compound

The energetic effects caused by replacing one of the methylene groups in the 9,10-dihydroanthracene by ether or ketone functional groups yielding xanthene and anthrone species, respectively, were determined from direct comparison of the standard (p° = 0.1 MPa) molar enthalpies of formation in the gaseous phase, at T = 298.15 K, of these compounds. The experimental static-bomb combustion calorimetry and Calvet microcalorimetry and the computational G3(MP2)//B3LYP method were used to get the standard molar gas-phase enthalpies of formation of xanthene, (41.8 ± 3.5) kJ · mol^?1, and anthrone, (31.4 ± 3.2) kJ · mol^?1. The enthalpic increments for the substitution of methylene by ether and ketone in the parent polycyclic compound (9,10-dihydroanthracene) are ?(117.9 ± 5.5) kJ · mol^?1 and ?(128.3 ± 5.4) kJ · mol^?1, respectively.     

One-pot synthesis of partially fluorinated naphthalene, anthracene, and chrysene derivatives

A series of partially fluorinated naphthalene, anthracene, and chrysene derivatives have been synthesized by a convenient one-pot reaction of multi-fluorinated aromatics and 1,4-dilithio-1,2,3,4-tetraaryl-1,3-butadiene that was generated in situ from the reduction of diphenylacetylene derivatives with lithium naphthalenide.     

Electrodimerization of cyano-substituted derivatives of anthracene and naphthalene

The electrochemistry of cyano-substituted derivatives of naphthalene and anthracene was studied at different temperatures (298–233 K) using slow and fast scan voltammetry with a maximum scan rate of 500 V s⁻¹. All experimental evidence indicates the formation of a dimer by an E_revC_2rev process at the monoanion level. Rate constants for dimerization process were evaluated in six different polar solvents using theoretical working curves for an E_revC_2rev mechanism. Digital simulation was used to verify the accuracy of these rate constants. The results show that the polarity of the solvent influences the rate of dimerization reactions and that radical anions of the studied compounds dimerize under diffusion control.     

13C, 13C coupling constants in anthracene, 9,10-dihydroanthracene and phthalic acid derivatives. Determination of signs by the symmetrical double labelling (SDL) method V

Carbon-13, carbon-13 one-bound and long-range coupling constants are determined for anthracene and 9,10-dihydroanthracene labelled in the 9,10-positions, and for thiophthalic anhydride and phthalimide, labelled in both carbonyl groups. Relative signs are determined by the SDL method. Signs in naphthalene, anthracene and pyrene derivatives are discussed. The general trends observed in many aromatic compounds, ³J|>|²J|>|⁴J| and ²J positive, ³J positive, ⁴J negative are mostly confirmed. However, evidence suggests that two-bond couplings between carbon atoms in the same ring in aromatic hydrocarbons are negative.     

Infrared absorption spectra of naphthalene and anthracene anion-radicals

The infrared spectra of naphthalene and anthracene anion-radicals and their completely deuterated analogs have been studied. The most intense bands have been assigned, and it has been shown that the frequencies of the bending and stretching vibrations of the ring and the C-H (D) bond are less than the corresponding frequencies for the hydrocarbons. The decrease in the frequencies has been attributed to the fact that the unpaired electron of the anionradical, present in an antibonding orbital, decreases the force constants of the bonds; this is analogous to an excited state of the hydrocarbon molecule. A product rule has been proposed for the anion-radicals and their original hydrocarbons.