Synthesis of Chromans from the Reaction of O-quinone Methide Precursor with Substituted Styrenes

Abstract

Table 1 The yields of chromenes (7R) and chromans(10R) Chromene Chromene R Yield/% R Yield/% H 52 H 53 o-CH 3 12 o-CH 3 21 m-CH 3 18 m-CH 3 25 p-CH 3 53 p-CH 3 38 o-Cl 8 o-Cl 16 m-Cl 20 m-Cl 20 p-Cl 33 p-Cl

Density functional and experimental studies on the FT‐IR and FT‐Raman spectra and structure of benzoic acid and 3,5‐dichloro salicylic acid

“…[2] BA acts as a better inhibitor compared to salicylic acid with equal concentration. [3] The industrial applications are as a corrosion inhibitor, as an additive to nucleating agents for polyolefin, as a dye intermediate, as a stabilizer in photographic processing and as a catalyst.…”

Synthesis and characterization of phenolic Mannich bases and effects of these compounds on human carbonic anhydrase isozymes I and II

“…Various drugs obtained from Mannich reaction have proved more effective and less toxic than their parent antibiotics 38 . In the present study, previously synthesized 2a 39 and novel Mannich bases 2b-f have been prepared by using microwave assist reaction of 3,4-dimethylphenol (1) with formaldehyde and various amines (Scheme 1) which contain both functional phenolic-OH group and -NHR or -NR 2 groups. They have been characterized by spectral (IR, 1 H and 13 C NMR) and elemental analyses.…”

Conformational stability, vibrational (FT-IR and FT-Raman) spectra and computational analysis of m-trifluoromethyl benzoic acid

“…In medicine, aromatic acids are employed as weak antiseptics, and their salts as carriers of specifications [1]. Benzoic acid acts as a better inhibitor compared to salicylic acid with equal concentration [2]. The industrial applications are as a corrosion inhibitor, as an additive to nucleating agents for polyolefin, as a dye intermediate, as a stabilizer in photographic processing, and as a catalyst.…”