Fluorene, 9,9-Dichloro

POLYHYDROGEN FLUORIDE REAGENT 1-FLUORO-ADAMANTANE. Dichloroalkane synthesis is shown in cis-DI-CHLOROALKANES FROM EPOXIDES cis-1,2-DICHLORO-CYCLOHEXANE. Nitrile functionality can be introduced from a ketone, as in NITRILES FROM KETONES CYCLOHEXANENITRILE, or from a reactive diene, as shown in 2,3-DICYANOBUTADIENE AS A REACTIVE INTERMEDIATE BY in situ GENERATION FROM 1,2-DICYANO CYCLOBUTENE 2,3-DICYANO-1,4,4a,9a -TETRAHYDRO-FLUORENE. 

It is reported that the palladium-catalysed intramolecular aromatization of 1,1 -dichloro-9/T-fluoren-9-yIidene (15) may lead to the formation of fullerene fragments.89 The amiulation reaction, under palladium catalysis, between iodoanflines and ketones may yield indole derivatives.90 There have also been studies of the palladium-catalysed carbonylation of o-iodophenols with allenes which may lead to l-benzopyran-4-one derivatives,91 of the intramolecular coupling of phenols with aryl halides,92 and of the intramolecular Heck aiylation of cyclic enamides.93... 

DIBENZO(B,E)(l, 4)DIOXIN, 1,2,3,4,6,7,8-HEPTACHLORO- see HARIOO DIBENZO(a,jk)FLUORENE see BCJ250 DIBENZO(b,jk)FLUORENE see BCJ280 DIBENZOFURAN, DICHLORO- see DEX200... 

An attempt to prepare the geminal diazide 103 from 9-(dichloro-methylene)fluorene (102) and sodium azide at room temperature resulted in the formation of 9-azido-9-fluorenecarbonitrile (104) This product can be explained as arising from the diazide 103 by loss of molecular nitrogen from one azido group, followed by reorganization of the remaining atoms. 

Alben (1980) chlorinated a coal-tar leachate that contained many polycyclic aromatic hydrocarbons and demonstrated that many hydrocarbons were significantly reduced in concentration. Oxygenated compounds, such as dibenzofuran (17), were formed, together with low concentrations of chlorinated and brominated derivatives of naphthalene and fluorene. Chlorinated polycyclic compounds have been demonstrated to occur in drinking water samples (Shiriashi et al., 1985), including mono-and dichloro derivatives of naphthalene, fluorene, dibenzofuran, phenanthrene, fluoranthene, and fluorenone (Figure 5.3). 

Typical procedure. 6-N-Phthaloyl-2 -0-(9-phenylxanthen-9-yl)-5 -0-(fluoren-9-yl-metln-oxycarbonyl)adenosine 865 [628] To a solution of 864 (635 mg, 1 mmol) in dry pyridine (10 mL) was added dropwise a solution of Fmoc-Cl (336 mg, 1.3 mmol) in dry acetonitrile (5 mL). The reaction mixture was stirred for 4.5 h at room temperature and was then poured into cold, saturated sodium hydrogen carbonate solution (100 mL). The resulting mixture was extracted with chloroform (2 x 50 mL), the combined organic layers were concentrated in vacuo, and the residue was dried by co-evaporation with toluene (4 x 25 mL). It was then dissolved in dichloro-methane, and precipitation from cyclohexane gave 865 yield (717 mg, 82%) ... 

Electrophilic Au(I)-catalyzed reaction of 9-propargyl-9H-fluorenes provides 3-substituted fluoranthenes in moderate to good yields after treatment with DDQ (2,3-dichloro-5,6-dicyano-l,4-benzoquinone) in toluene under reflux (Scheme 18.7) [7]. GaCE also demonstrates the same cyclization in toluene at 70 °C. 

Chlorosulfonyl)-2-sulfophenyl]-3,6-bis(diethylamino)xanthylium, C-00261 >2,6-Dibromo-4-(chloroimino)-2,5-cyclohexadien-l-one, D-00180 >2,6-Dichloro-4-(chloroimino)-2,5-cyclohexadien-l-one, D-00257 3,3- Diethyl-1 -(9Ff-fluoren-2-yl)-1 -triazene, D-00347... 

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