Research Article: 3-Eth­oxy­carbonyl-2-hy­droxy-6-meth­oxy-4-methyl­benzoic acid

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Yun-Xia Deng, Tao Guo, Hui Xie, Sheng-Li Pan.

http://doi.org/10.1107/S1600536812015012

Abstract

The title compound, C12H14O6, a substituted isophthalic acid monoester which was isolated from the lichen Thamnolia vermicularis var. subuliformis, displays intra­molecular carbox­yl–meth­oxy O—H⋯O and hy­droxy–carboxyl O—H⋯O hydrogen-bonding inter­actions. The terminal methyl group of the ethyl ester is disordered over two sets of sites with occupancies of 0.599 (19) and 0.401 (19).

Partial Text

For general background to the phenol compounds isolated from the lichen Thamnolia vermicularis var. subuliformis, see: Jiang et al. (2002 ▶); Milenkovic-Andjelkovic (2010 ▶). For applications of analogs of the title compound, see: Huneck (1999 ▶).

 

Source:

http://doi.org/10.1107/S1600536812015012