Abstract:
The preparation of aromatic ketones substituted with a thioether group at the ortho position is accomplished by the initial reaction of an aromatic nucleus substituted with a halide and an ortho nitro group with a nitroalkane in the presence of a hydroxide base. The resulting ortho-nitroalkyl nitroarene compound is converted to the corresponding ortho-nitroaryl ketone by an oxidative Nef reaction. The aromatic nitro group of the ortho-nitroaryl ketone is replaced with a thioether group by reaction with a thiolate anion, most preferably under phase-transfer conditions. Aromatic ketones may be used to prepare various pharmaceutical and herbicidal compounds.
Abstract:
A process for the preparation of para-nitrophenol by bringing a phenyl ester of an inorganic acid into contact with a nitrating agent in the presence of liquid hydrofluoric acid and a hydrolysis of the nitrated product obtained is carried out either simultaneously or in sequence with the nitration.
Abstract:
Preparation of 3,3'- or 3,4'-diaminodiphenylmethane by catalytically reducing and dechlorinating, in the presence of a reduction catalyst, a dinitrobenzophenone compound having the formula ##STR1## wherein X is chlorine and attached to a position 4 or 6 on the benzene ring, and Y is hydrogen or chlorine with the proviso that when Y is hydrogen, the nitro group is attached to a position 3' or 4', and when Y is chlorine, Y is attached to a position 4' and the nitro group is attached to a position 3'.
Abstract:
A process for selectively forming nitro compounds by contacting, at elevated temperature and pressure and in a homogeneous gas phase, an aldehyde having from two to ten carbon atoms with nitrogen dioxide alone or in the presence of oxygen and/or water.
Abstract:
A novel conjugated diene bisfunctionalization process wherein a nitro group and a hydroxyl group in the form of an ester are introduced into the conjugated diene molecule by treatment of conjugated dienes with nitric acid in the presence of an acid anhydride. The novel compounds produced by this process and transformation products thereof, are useful as bactericides and fungicides and valuable organic synthesis intermediates, A novel procedure for the production of nitriles and .gamma.-acetoxytiglic aldehyde is disclosed.
Abstract:
A METHOD FOR PREPARING CAPROLACTAM BY THE STEPS OF (1) NITRO-OXIDIZING CYCLOHEXENE TO 2-NITROCYCOLHEXANONE, (2) CLEAVING AND ESTERIFYING 2-NITROCYCLOHEXANONE WITH AN ALCOHOL TO FORM AN ALKYL 6-NITROHEXANOATE AND (3) CATALYTICALLY HYDROGENATING AND CYCLIZING THE NITROESTER TO CAPROLACTAM.
Abstract:
OIL-SOLUBLE PRODUCTS USEFUL AS LUBRICATING OIL ADDITIVE TO IMPART DETERGENCY AND DISPERSANT PROPERTIES THERETO ARE PREPARED BY THE CONDENSATION OF ALPHA-NITRO ALKYL CHLORIDES, HAVING AT LEAST 10 CARBON ATOMS IN THE ALKYL SUBSTITUENT, WITH POLYAMINO UREAS IN THE MOLAR RATIO OF FROM ABOUT 1.0:0.5 TO ABOUT 1.0:1.0, RESPECTIVELY.
Abstract:
A process for the production of a nitroalkane or dinitroalkane by reacting an olefin or diolefin with nitric acid in the presence of a lower aliphatic monocarboxylic acid anhydride, thereby producing a nitro-ester or dinitro-ester, and reducing the nitro-ester or dinitro-ester with an alkali borohydride to produce the nitroalkane or dinitroalkane.
Abstract:
Preparation of p-nitrobenzoic and 4''-nitro-4-biphenylcarboxylic acids by contacting a p-sulfo benzoic acid or 4''-sulfo-4biphenylcarboxylic acid with at least one molar proportion of nitric acid as a 5-60 percent by weight aqueous solution in the liquid phase at 120* C.-300* C. to displace the sulfo group by a nitro group and by contacting a benzenesulfonic acid or a 4biphenyl sulfonic acid bearing an oxidizable alkyl group para to the sulfo group with aqueous nitric acid or a mixture of nitric acid and molecular oxygen containing gas at a temperature of 120*-300* C. in a single overall reaction.
Abstract:
FLUORINATIVE OXIDATIONS ARE EFFECTED USING ENERGIZED FLUOROXY COMPOUNDS SUCH AS (FO)2CF2. THE PRODUCTS INCLUDE SELECTIVELY FLUORINATED COMPOUNDS IN WHICH FLUORINE MAY REPLACE HYDROGEN ON CARBON OR NITROGEN. REDUCTION PRODUCTS OF THE OXIDANT MAY INCLUDE PEROXY GROUPS NOT INITIALLY PRESENT.