TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The inorganic base is selected from carbonates, bicarbonates, hydroxides, alkoxides, and/or hydrides. Preferably, the inorganic base is selected from potassium carbonate, sodium carbonate, cesium carbonate, potassium bicarbonate, sodium bicarbonate, sodium hydroxide, potassium hydroxide, sodium methoxide, potassium tert-butoxide, and/or sodium hydride.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The reaction of step (i) is carried out at 5-40 degrees C. The compound IV is hydrolyzed with an acid in the presence of an alcohol. Preferred Components: The organic solvent is selected from alcohols, nitriles, esters, ketones, hydrocarbons, chlorinated solvents, amides, sulfoxides, and/or ethers. Preferably, the organic solvent is selected from acetonitrile, isopropyl alcohol, methanol, ethanol, and/or methylene dichloride. The amount of water in the solvent system is 5-60 wt.% of the organic solvent(s). The base is selected from organic or inorganic base. The organic base is selected from triethyl amine (TEA), diisopropyl ethyl amine (DIPEA), dimethyl aniline, diisopropyl amine (DIPA), and/or 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU). The alcohol is selected from 1-4C alcohols. ACTIVITY - Cardiant; Neuroprotective; Antitubercular; Tuberculostatic; Respiratory-Gen.; Antibacterial; Antiinflammatory. No biological data is given.    MECHANISM OF ACTION - None given.    EXAMPLE - To a solution of 650 ml of acetonitrile and 203 g of wet cake of 1-cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-3-quinoline carboxylic acid-O3,O4) bis(acetato-O)-borate (having 31% moisture content) was added 40.8 g of (S,S)-2,8-diazabicyclo-(4,3,0)nonane dissolved in 50 ml of acetonitrile at 10-15 degrees C. To the above reaction mass added 33.4 g of triethyl amine and stirred at 15-20 degrees C for 6-8 h. After completion of reaction, distilled the reaction mixture under vacuum at 30 degrees C followed by addition of 300 ml of isopropyl alcohol at 10-15 degrees C. Adjusted the pH of the reaction mass to 1.0-2.0 with dilute hydrochloric acid and stirred for 6 h. The reaction mass was cooled to 0-5 degrees C and filtered the solid mass. The crude mass so obtained was crystallized in methanol and water (3:1) to get wet Moxifloxacin hydrochloride, which in turn, was dried under vacuum to get 118 g of Moxifloxacin hydrochloride having purity 99.97% by HPLC.