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3-methyl-4,5,6,7-tetrahydro-1-benzothiophene-2-carboxylic acid3-methyl-4 5 6,7-tetrahydro-1-benzothiophene-2-carboxylic酸
Molbank 2010, M648
OPEN ACCESS
molbank
ISSN 1422-8599
/journal/molbank
Short Note
3-Methyl-4,5,6,7-tetrahydro-1-benzothiophene-2-
carboxylic Acid
Sembian Ruso Jayaraman 1,*, Madhavan Sridharan 1 and Rajendiran Nagappan 2
1 Syngene Intl. Ltd., Biocon Park, Plot No.23, Bommasandra IV phase, Jigani Link Road,
Bangalore-560 099, India
2 Department of Polymer Chemistry, University of Madras, Gundy Campus, Chennai-600 025, India
* Author to whom correspondence should be addressed; E-Mail: Sembian.Ruso@;
Tel.: +919880455664, 9180 2808 2808.
Received: 01 December 2009 / Accepted: 24 December 2009 / Published: 6 January 2010
Abstract: 3-Methyl-4,5,6,7-tetrahydro-1-benzothiophene-2-carboxylic acid was
synthesized chemoselectively from 3-formyl-4,5,6,7-tetrahydro-1-benzothiophene-2-
carboxylic acid, using Et SiH/I as a reducing agent. The title compound was characterized
3 2
1 NMR, 13C NMR and LCMS.
by IR, H
Keywords: triethylsilane; iodine; 3-formyl-4,5,6,7-tetrahydro-1-benzothiophene
1. Introduction
In recent years, the popularity and usage of silicon reagents have tremendously increased due to
their stereoselectivity [1] and chemoselectivity [2]. The reductive halogenations of carbonyl
compounds were promoted by silic
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