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Catalysts and methods for catalytic oxidation

a catalytic oxidation and catalyst technology, applied in the field of catalytic systems, can solve problems such as inability to purify

Inactive Publication Date: 2005-09-01
BUSCH DARYLE HADLEY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The isolated solids are assertedly frequently contaminated with free ligand or “excess metal salt” and attempts to prepare chloride and bromide derivatives gave solids of variable composition which could not be purified by repeated crystallization.

Method used

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  • Catalysts and methods for catalytic oxidation
  • Catalysts and methods for catalytic oxidation
  • Catalysts and methods for catalytic oxidation

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0213] Synthesis of [Mn(Bcyclam)Cl2]

(a) Method I.

[0214]“Bcyclam” (5,12-dimethyl-1,5,8,12-tetraaza-bicyclo[6.6.2] hexadecane) is prepared by a synthesis method described by G. R. Weisman, et al., J.Amer.Chem.Soc., (1990), 112, 8604. Bcyclam (1.00 g., 3.93 mmol) is dissolved in dry CH3CN (35 mL, distilled from CaH2). The solution is then evacuated at 15 mm until the CH3CN begins to boil. The flask is then brought to atmospheric pressure with Ar. This degassing procedure is repeated 4 times. Mn(pyridine)2Cl2 (1.12 g., 3.93 mmol), synthesized according to the literature procedure of H. T. Witteveen et al., J. Inorg. Nucl. Chem., (1974), 36, 1535, is added under Ar. The cloudy reaction solution slowly begins to darken. After stirring overnight at room temperature, the reaction solution becomes dark brown with suspended fine particulates. The reaction solution is filtered with a 0.2μ filter. The filtrate is a light tan color. This filtrate is evaporated to dryness using a rotoevaporator...

example 2

[0216] Synthesis of [Mn(C4-Bcyclam)Cl2] where C4-Bcyclam=5-n-butyl-12-methyl-1,5,8,12-tetraaza-bicyclo[6.6.2]hexadecane

(a) C4-Bcyclam Synthesis

[0217] Tetracyclic adduct I is prepared by the literature method of H. Yamamoto and K. Maruoka, J. Amer. Chem. Soc., (1981), 103, 4194. I (3.00 g., 13.5 mmol) is dissolved in dry CH3CN (50 mL, distilled from CaH2). 1-Iodobutane (24.84 g., 135 mmol) is added to the stirred solution under Ar. The solution is stirred at room temperature for 5 days. 4-Iodobutane (12.42 g., 67.5 mmol) is added and the solution is stirred an additional 5 days at RT. Under these conditions, I is fully mono-alkylated with 1-iodobutane as shown by 13C-NMR. Methyl iodide (26.5 g, 187 mmol) is added and the solution is stirred at room temperature for an additional 5 days. The reaction is filtered using Whatman #4 paper and vacuum filtration. A white solid, II, is collected (6.05 g., 82%). 13C NMR (CDCl3) 16.3, 21.3, 21.6, 22.5, 25.8, 49.2, 49.4, 50.1, 51.4, 52.6, 5...

example 3

[0220] Synthesis of [Mn(Bz-Bcyclam)Cl2] where Bz-Bcyclam=5-benzyl-12-methyl-1,5,8,12-tetraaza-bicyclo[6.6.2]hexadecane

(a) Bz-Bcyclam Synthesis

[0221] This ligand is synthesized similarly to the C4-Bcyclam synthesis described above in Example 2(a) except that benzyl bromide is used in place of the 1-iodobutane. 13C NMR (CDCl3) 27.6, 28.4, 43.0, 52.1, 52.2, 54.4, 55.6, 56.4, 56.5, 56.9, 57.3, 57.8, 60.2, 60.3, 126.7, 128.0, 129.1, 141.0 ppm. Mass Spec. (MH+, 331).

(b) [Mn(Bz-Bcyclam)Cl2] Synthesis

[0222] This complex is made similarly to the [Mn(C4-Bcyclam)Cl2] synthesis described above in Example 2(b) except that Bz-Bcyclam is used in place of the C4-Bcyclam. Ion Spray Mass Spectroscopy shows one major peak at 430 mu corresponding to [Mn(Bz-Bcyclam)(formate)]+.

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Abstract

Catalytic systems and methods for oxidizing materials in the presence of metal catalysts (preferably manganese-containing catalysts) complexed with selected macropolycyclic rigid ligands, preferably cross-bridged macropolycyclic ligands. Included are using these metal catalysts in such processes as: synthetic organic oxidation reactions such as oxidation of organic functional groups, hydrocarbons, and heteroatoms, including enantiomeric epoxidation of alkenes, enynes, sulfides to sulfones and the like; oxidation of oxidizable compounds (e.g., stains) on surfaces such as fabrics, dishes, countertops, dentures and the like; oxidation of oxidizable compounds in solution, dye transfer inhibition in the laundering of fabrics; and further in the bleaching of pulp and paper products.

Description

[0001] CROSS-REFERENCE [0002] This application is a continuation of and claims priority under 35 U.S.C. § 120 to U.S. application Ser. No. 10 / 228,854, filed Aug. 27, 2002, which in turn claims priority to U.S. application Ser. No. 10 / 155,105, filed May 24, 2002, (now abandoned) which in turn claims priority to U.S. application Ser. No. 09 / 380,672, filed Sep. 7, 1999, (now abandoned) which is an entry into the U.S. National Stage under 35 U.S.C. § 371 of PCT International Application Serial No. PCT / IB98 / 00302, filed Mar. 6, 1998, which claims priority under PCT Article 8 and 35 U.S.C. § 119(e) to U.S. Provisional Application Ser. No. 60 / 040,629, filed Mar. 7, 1997 (now abandoned).TECHNICAL FIELD [0003] The present invention relates to catalytic systems and methods for oxidizing materials in the presence of catalysts which are complexes of transition metals such as Mn, Fe or Cr, with selected macropolycyclic rigid ligands, preferably cross-bridged macropolycyclic ligands. More specifi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C11D3/16C11D3/39
CPCB01J31/182B01J2231/70B01J2531/0241B01J2531/72D06L3/021C11D3/168C11D3/3932D06L3/00B01J2531/842D06L4/12D06L4/00
Inventor BUSCH, DARYLE HADLEYCOLLINSON, SIMON ROBERTHUBIN, TIMOTHY JAY
Owner BUSCH DARYLE HADLEY
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