16897-57-7Relevant academic research and scientific papers
BENZIMIDAZOLE COMPOUND AND PHARMACEUTICAL USE THEREOF
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Page/Page column 27; 28, (2009/12/23)
Provided is an ORL-1 receptor agonist having improved bioavailability based on superior metabolic stability and strong and high selectivity, as compared to conventional compounds. A compound represented by the formula (I) wherein each symbol is as defined
3,4-, 4,7- and 1,4,7-Substituted indenyl-TiCl3 complexes: Synthesis and comparison of substituent effects
Wei?, Thomas,Meichel, Eduard,Sachse, Helga,Spange, Stefan,Lang, Heinrich
, p. 1083 - 1094 (2008/10/09)
Me3Si-substituted indenes of type 1-SiMe3-3,4- (CH2)3C9H5 (9), 1-SiMe 3-4-R-7-R′C9H5 (11a, R = R′ = Me; 11b, R = R′ = Ph; 11c, R = Me, R′ = Ph) and 1,1′-(SiMe 3)2-4,7-Me2C9H4 (12) were synthesised as precursors for piano-stool type halfsandwich indenyl-titanium trichloride complexes. Treatment of 9, 11, and 12 with equimolar amounts of TiCU gives the complexes (η5-3,4-(CH2)3C 9H5)TiCl3 (13), (η5-4-R-7- R′C9H5)TiCl3 (14a, R = R′ = Me; 14b, R = R′ = Ph; 14c, R = Me, R′ = Ph), and (η5-1- SiMe3-4,7-Me2C9H4)TiCl3 (15), respectively, with liberation of Me3SiCl. Detailed UV/vis spectroscopic and cyclic voltammetric studies were carried out which allow a comparison of substituent effects in 13-15.
Abnormal Behaviour of Anhydrides of 1-Carboxy-1,2,3,4-tetrahydronaphthalene-1-acetic Acid and Its 7-Methyl Derivative in Presence of Anhydrous Aluminium Chloride: Synthesis of Acenaphthene and 3-Methylacenaphthene
Mitra, Ashutosh,Ray, Rebati M.,Majumder, Arun K.
, p. 449 - 452 (2007/10/02)
Friedel-Crafts reaction of the anhydride of 1-carboxy-1,2,3,4-tetrahydronaphthalene-1-acetic acid (1a, R=H ) with benzene or toluene at 50-60 deg C affords 1,2,3,4-tetrahydronaphthalene-1-acetic acid (2a) and 10-carboxy-3,4,5,10-tetrahydroacenaphthene-1-one (3c).The anhydride of 1b (R=Me) similarly yields 7-methyl-1,2,3,4-tetrahydronaphthalene-1-acetic acid (2b). 2a,2b and their methyl esters have been converted into 3,4,5,10-tetrahydroacenaphthene-1-one (3a) and the 8-methyl analogue (3b) respectively. 3a and 3b on reduction afford 4a and 4b, which on dehydrogenation with Pd/C afford acenaphthene and 3-methylacenaphthene respectively. 3-Methylacenaphthene has also been synthesised by an alternate route starting from 7-methyltetralone.
