35322-84-0Relevant academic research and scientific papers
ALKYLINDENYL ORGANOACTINIDES: SYNTHETIC CHEMISTRY, CHARACTERIZATION AND PHYSICAL PROPERTIES
Goffart, J.,Desreux, J. F.,Gilbert, B. P.,Delsa, J. L.,Renkin, J. M.,Duyckaerts, G.
, p. 281 - 296 (1981)
Tris(1-ethylindenyl)actinide chloride and tris(1,4,7-trimethylindenyl)actinide chloride (An = U and Th) have been prepared and characterized by chemical analysis and mass spectrometry.The electronic, infrared, Raman and NMR spectra have been recorded.No major steric hindrance was detected and the alkylindenyl groups appear mainly as pentahapto bonded to the actinide.The spectroscopic measurements are consistent with the single crystal X-ray structure of tris(1,4,7-trimethylindenyl)uranium chloride.The magnetic susceptibility of the uranium compounds has been measured between 2 and 300 K.
Microwave-assisted one-pot synthesis of 1-indanones from arenes and α,β-unsaturated acyl chlorides
Yin, Wei,Ma, Yuan,Xu, Jiaxi,Zhao, Yufen
, p. 4312 - 4315 (2007/10/03)
A series of 1-indanones were synthesized in good yields via tandem Friedel-Crafts acylation and Nazarov cyclization of arenes and α,β-unsaturated acyl chlorides in the presence of aluminum chloride under microwave irradiation.
Synthesis of 1-indanones by intramolecular Friedel-Crafts reaction of 3-arylpropionic acids catalyzed by Tb(OTf)3
Cui, Dong-Mei,Zhang, Chen,Kawamura, Masato,Shimada, Shigeru
, p. 1741 - 1745 (2007/10/03)
Intramolecular Friedel-Crafts acylation reaction of 3-arylpropionic acids was efficiently catalyzed by Tb(OTf)3 at 250°C to give 1-indanones. Even deactivated 3-arylpropionic acids with halogen atoms on the aromatic ring can be cyclized in moderation to good yields.
PROCESS FOR PRODUCING AROMATIC COMPOUNDS BY FRIEDEL-CRAFTS REACTION
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Page 17-18, (2008/06/13)
There is provided a process for producing an aromatic compound by Friedel-Crafts reaction product, which comprises reacting an aromatic compound with an ester compound in the presence of a heteropolyacid-containing solid acid catalyst.
Alkylation-acylation of aromatics with γ-butyrolactone catalyzed by heteropolyacids supported on silica
Mao, Jianxin,Nakajo, Tetsuo,Okuhara, Toshio
, p. 1104 - 1105 (2007/10/03)
Silica-supported H4SiW12O40 catalyzed efficiently alkylation/acylation of 1,3,5-trimethylbenzene or p-xylene with γ-butyrolactone to 4-(2,4,6-trimethylphenyl) butyric acid or to dimethyl-α-tetralone (5,8-dimethyl-3,4-dihyd
New indenyl titanium catalysts for syndiospecific styrene polymerizations
Ready, Thomas E.,Chien, James C.W.,Rausch, Marvin D.
, p. 11 - 27 (2007/10/03)
A series of multi-methyl-substituted indenes as well as allylindene, n-propylindene, n-but-1-enylindene, and n-butylindene have been prepared in good yields. The substituted indenes were converted into trimethylsilyl derivatives via reactions of intermediate organolithium complexes with chlorotrimethylsilane. The corresponding titanium complexes were synthesized in excellent yields from reactions of the trimethylsilyl derivatives with TiCl4. The titanium complexes were evaluated as styrene polymerization catalysts in toluene solution when activated by methylaluminoxane. In general, catalytic activities decreased with each additional methyl substituent. Syndiospecificities were very high (90-95%).
Process for the preparation of substituted indanones
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, (2008/06/13)
1-Indanones of the formula III or IIIa STR1 in which R1 to R7 are preferably hydrogen or alkyl, or adjacent radicals R1 to R4 form a ring, are obtained in a one-step reaction by reacting a compound I STR2 with a compound of the formula II STR3 in liquid hydrogen fluoride.
Modern Friedel-Crafts chemistry XIII. Intra- and intermolecular cyclization of some carbonyl derivatives under Friedel-Crafts conditions
Khalaf, Ali A.,Abdel-Wahab, Aboel-Magd A.,El-Khawaga, Ahmed M.,El-Zohry, Maher F.
, p. 285 - 291 (2007/10/02)
Carbonyl group deactivation in the cycloalkylation of aryl haloalkyl ketones was studied.Ketones 1-5 were prepared and subjected to treatment with AlCl3, AlCl3/H2SO4 and H2SO4 catalysts.Whereas AlCl3 catalyst gave no cyclization products, the use of AlCl3/H2SO4 and H2SO4 catalysts afforded the corresponding indanones and/or tetralones (6-11).The intermediate p-methylacrylophenone (12) was also obtained in the case of ketone 2.Furthermore intermolecular cyclizations of benzene, toluene and p-xylene with 3-chloropropionyl chloride (13) and 4-chlorobutyryl chloride (14) were investigated.In the presence of AlCl3/CH3NO2 catalyst, only the corresponding aryl haloalkyl ketones (1-5) were formed whereas the use of AlCl3 catalyst gave, in addition, some cyclic ketones.However, the use of AlCl3/H2SO4 catalyst gave only the corresponding cyclic ketones (6-11).Results are discussed and mechanisms are suggested.In conclusion, carbonyl group deactivation for ring closure is demonstrated in the investigated ketones and cyclization can only effected under strenuous conditions.
