16897-57-7Relevant articles and documents
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
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.