Abstract:
Process for the production of fatty acids by oxidative dehydrogenation of straight or branch chain primary alcohols of from C-4 to C-30 chain lengths per molecule, or mixtures of branch and straight chains, which are selectively reacted with an anhydrous alkali metal hydroxide. In the reaction, the temperature of reaction is gradually increased to maintain the reaction medium in a liquid non-viscous state. The reaction temperature is, however, maintained at a sufficiently low temperature to minimize by-product formation. The process is conducted at temperatures of from about 175°C to about 400°C for sufficient time to form the sodium salt of the acid which is then converted to the acid utilizing a mineral acid.
Abstract:
Compounds of the formula wherein R is halogen; C₁-C₂ alkyl; C₁-C₂ alkoxy; trifluoromethoxy; difluoromethoxy; nitro; cyano; C₁-C₂ haloalkyl; R a SO n - wherein n is 0 or 2 and R a is C₁-C₂ alkyl; trifluoromethyl or difluoromethyl; R¹ is hydrogen, C₁-C₄ alkyl, halogen, phenyl or substituted phenyl; R² is hydrogen or C₁-C₄ alkyl; or R¹ and R² together are C₂-C₅ alkylene; R³ is hydrogen, C₁-C₄ alkyl, phenyl or substituted phenyl, with the proviso that R¹ and R³ are not both phenyl or substituted phenyl; R⁴ is hydrogen or C₁-C₄ alkyl; R⁵ is hydrogen, halogen or C₁-C₄ alkyl; R⁶ is halogen, cyano, nitro, trifluoromethyl, -C(O)-OR f wherein R f is C₁-C₄ alkyl, or -C(O)NR₂ b wherein R b is hydrogen or C₁-C₂ alkyl; R⁷ and R⁸ independently are (1) hydrogen; (2) halogen; (3) C₁-C₄ alkyl; (4) C₁-C₄ alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C₁-C₄ haloalkyl; (9) R b SO n - wherein n is the integer 0, 1 or 2; and R b is (a) C₁-C₄ alkyl; (b) C₁-C₄ alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) -NR c R d wherein R c and R d independently are hydrogen or C₁-C₄ alkyl; (11) R e C(O)- wherein R e is C₁-C₄ alkyl or C₁-C₄ alkoxy; or (12) -SO₂NR c R d wherein R c and R d are as defined; and (13) -N(R c )C(O)R d wherein R c and R d are as defined; and their salts.
Abstract:
Compounds of the formula wherein R is hydrogen; halogen; C 1 -C 2 alkyl; C 1 -C 2 alkoxy; nitro; cyano; C 1 -C 2 haloalkyl; or R a SO n -wherein n is 0 or 2 and Ra is C 1 -C 2 alkyl, trifluoromethyl or difluoromethyl; or trifluoromethoxy or difluoromethoxy; R 1 is hydrogen or C,-C 4 alkyl; R 2 is hydrogen or C 1 -C 4 alkyl; or R 1 and R 2 together are C 2 -C 5 alkylene; R 2 is C 1 -C 4 alkyl; R 4 is C 1 -C 4 alkyl; or R 3 and R 4 together are C 2 -C 6 alkylene; R 6 and R 6 independently are (1) hydrogen; (2) halogen; (3) C 1 -C 4 alkyl; (4) C 1 -C 4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C 1 -C 4 haloalkyl; (9) R b SO n - wherein n is the integer 0, 1 or 2; and R b is (a) C 1 -C 4 alkyl; (b) C 1 -C 4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) -NR c R d wherein R c and R d independently are hydrogen or C 1 -C 4 alkyl; (11) R e C(O)- wherein R e is C 1 -C 4 alkyl or C 1 -C 4 alkoxy; or (12) -SO 2 NR c R d wherein R c and R d are as defined; and (13) -N(R c )C(O)R d wherein R c and R d are as defined and their salts.
Abstract:
Isothiocyanates are formed by oxidizing, with gaseous oxygen or air, in the presence of a metal oxidation catalyst a dithiocarbamate with appropriate control of the pH of the reaction medium to suppress the formation of by-products. Optionally a quaternary ammonium halide catalyst can be used to increase product yield.
Abstract:
Lipase hydrolysis of an ester group of a substrate can be conducted in the absence of large quantities of water and excess enzyme without extensive inhibition of enzyme activity due to water-soluble product alcohol. A lipase reaction can be efficiently conducted by dispersing a water-immiscible organic substrate phase in an aqueous phase, washing the reaction continuously while the reaction mixture is maintained in the dispersed state, and continuously removing an amount of aqueous phase substantially equivalent to the washing solution added. The washing solution can be an aqueous neutralizing solution. By this process, water-soluble product alcohol can be removed from the reaction mixture without removal of substantial quantities of water-soluble enzyme.
R is hydrogen; halogen; C 1 -C 2 alkyl; C 1 -C 2 alkoxy; nitro; cyano; C 1 -C 2 haloalkyl; or R a SO n -wherein n is 0 or 2 and Ra is C 1 -C 2 alkyl, trifluoromethyl or difluoromethyl; or trifluoromethoxy or difluoromethoxy; R 1 is hydrogen or C,-C 4 alkyl; R 2 is hydrogen or C 1 -C 4 alkyl; or R 1 and R 2 together are C 2 -C 5 alkylene; R 2 is C 1 -C 4 alkyl; R 4 is C 1 -C 4 alkyl; or R 3 and R 4 together are C 2 -C 6 alkylene; R 6 and R 6 independently are (1) hydrogen; (2) halogen; (3) C 1 -C 4 alkyl; (4) C 1 -C 4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C 1 -C 4 haloalkyl; (9) R b SO n - wherein n is the integer 0, 1 or 2; and R b is (a) C 1 -C 4 alkyl; (b) C 1 -C 4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) -NR c R d wherein R c and R d independently are hydrogen or C 1 -C 4 alkyl; (11) R e C(O)- wherein R e is C 1 -C 4 alkyl or C 1 -C 4 alkoxy; or (12) -SO 2 NR c R d wherein R c and R d are as defined; and (13) -N(R c )C(O)R d wherein R c and R d are as defined and their salts.