180532-07-4

Upstream product

• 3316-09-4 1,2-dihydroxy-4-nitrobenzene 
• 96-32-2 bromoacetic acid methyl ester 

Downstream Products

• 83257-95-8 1,2-di(2-hydroxyethoxy)-4-nitrobenzene 
• 180532-08-5 3,4-dimethoxycarbonylmethyloxyaniline hydrochloride 
• 97916-49-9 4-nitro-1,2-bis(2-chloroethoxy)benzene 
• 165598-58-3 3,4-bis(2-chloroethoxy)aniline 

Relevant academic research and scientific papers

Synthesis of benzodioxepinone analogues via a novel synthetic route with qualitative olfactory evaluation

Marine odorants represent a minor yet diverse class of substances within the fragrance industry, of which 7-methyl-2H-1,5-benzodioxepin-3(4H)-one (1) is commercially known as Calone 1951, a synthetic first in the area of marine-fragrance chemistry. To determine the extent to which the characteristic marine odor of Calone 1951 corresponds to the substitution at the benzo portion of the molecule, a variety of aromatic substituents were incorporated into the benzodioxepinone structure (Scheme 1, Table 3). In light of the difficulty experienced in applying patented literature to deriving the analogues 12-18, particularly those with electron-withdrawing substituents, an alternative synthetic scheme was implemented for the construction of all analogues in favorable yields (Scheme 4, Table 3). Formation of the hydroxy-protected dihalo alkylating agent 24 via epoxide cleavage of epichlorohydrin (Scheme 3) allowed etherification favoring dihalo displacement and subsequent intramolecular ring closure (-→26a-g). THP Deprotection followed by oxidation of the alcohols 27a-g to the ketones 12-18 provided a general pathway to the benzodioxepinone products. The influence of the substituent nature on odor activity revealed a diverse scope of olfactory character (Table 4).

Vibrational and crystal structure analysis of a phenylenedioxydiacetic acid derivative

Computationally derived data has successfully assisted the characterisation of the Raman and infrared vibrational spectra of the phenylenedioxydiacetic acid (PDA) derivative 2,2′-[(4-nitro-1,2-phenylene)bis(oxy)]diacetate (I) in the solid state. X-ray dif

NOVEL INHIBITORS OF BETA-LACTAMASE

This invention provides novel β-lactamase inhibitors of the aryl- and heteroarylsulfonamidomethylphosphonate monoester class having nitrogen-based cations or quarternary ammonium groups. The compounds inhibit three classes of β-lactamases and synergize the antibacterial effects of β-lactam antibiotics (e.g., imipenem and ceftazidime) against those micro-organisms normally resistant to the β-lactam antibiotics as a result of the presence of the β-lactamases. Formula (I) or pharmaceutically acceptable salt thereof.

NOVEL SULFONAMIDOMETHYLPHOSPHONATE INHIBITORS OF BETA-LACTAMASE

This invention provides novel β-lactamase inhibitors of the aryl-and heteroaryl-sulfonamidomethylphosphonate monoester class. The compounds inhibit three classes of β-lactamases and synergize the antibacterial effects of β-lactam antibiotics (e.g., imipenem and ceftazimdime) against those micro-organisms normally resistant to the β-lactam antibiotics as a result of the presence of the β-lactamases. Formula (I) or a pro-drug or pharmaceutically acceptable salt thereof, wherein: W represents: Formula (II).

Carboxylic acid derivatives, medicaments comprising these compounds, their use and processes for their production

The present invention relates to carboxylic acid derivatives of the general formula STR1 in which Ra to Rc, A, B, D, E and X1 to X3 are as defined in claim 1, their tautomers, their stereoisomers including their mixtures, and their salts, in particular their physiologically tolerated salts with inorganic or organic acids or bases, which have useful pharmacological properties, preferably aggregation-inhibiting inhibiting actions, medicaments containing these compounds, their use and processes for their preparation.