Catalytic asymmetric epoxidation

外国特許コード	F110003521
整理番号	B12-01US
掲載日	2011年6月28日
出願国	アメリカ合衆国
出願番号	76202804
公報番号	20050159607
公報番号	7202371
出願日	平成16年1月20日(2004.1.20)
公報発行日	平成17年7月21日(2005.7.21)
公報発行日	平成19年4月10日(2007.4.10)
発明の名称 （英語）	Catalytic asymmetric epoxidation
発明の概要（英語）	(US7202371) The present invention relates to the synthesis of chiral epoxides via a catalytic asymmetric oxidation of olefins. Additionally, the methodology provides a method of asymmetrically oxidizing sulfides and phosphines. This asymmetric oxidation employs a catalyst system composed of a metal and a chiral bishydroxamic acid ligand, which, in the presence of a stoichiometric oxidation reagent, serves to asymmetrically oxidize a variety of substrates.
特許請求の範囲（英語）	[claim1] 1. A method of performing a catalytic asymmetric epoxidation comprising: reacting an alkene or cyclic alkene with catalytic amounts of a chiral bishydroxamic acid ligand and a metal, in the presence of an oxidation reagent, to produce a chiral epoxide, where the chiral bishydroxamic acid ligand has a structure I: where: R1, R2, R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, heteroaryl, and arylalkyl; or where R1 and R2, together with the atom to which they are attached, form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, heterocyclyl, and aryl;or where R4 and R5, together with the atom to which they are attached, form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, heterocyclyl, and aryl;R7, R8, R9, and R10 are each independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, heteroaryl, and arylalkyl;or where R7 and R9, together with the atoms to which they are attached, form a substituted or non-substituted ring selected from the group consisting of cycloalkyl and heterocyclyl;-Z- is selected from the group consisting of -- C(O) -- and -- S(O)2 -- . [claim2] 2. The method of claim 1, where the metal is selected from the group consisting of vanadium (IV), vanadium (V), molybdenum (IV), molybdenum (V), and molybdenum (VI). [claim3] 3. The method of claim 2, where the metal is selected from the group consisting of vanadium (IV) and vanadium (V). [claim4] 4. The method of claim 2, where the metal is selected from the group consisting of molybdenum (IV), molybendum (V), and molybendum (VI). [claim5] 5. The method of claim 1, where the oxidation reagent is an organic hydroperoxide with the following structure (II): R11 -- O -- OH II where, R11 is selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl, and heterocyclyl. [claim6] 6. The method of claim 1, where R1, R2, R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen, alkyl, alkyoxy, and alkylamino. [claim7] 7. The method of claim 1, where R1, R2, R3, R4, R5, and R6 are each independently selected from the group consisting of cycloalkyl and heterocyclyl. [claim8] 8. The method of claim 1, where R1, R2, R3, R4, R5, and R6 are each independently selected from the group consisting of aryl, arylalkyl, heteroaryl, and halogen. [claim9] 9. The method of claim 1, where: R1 and R2, together with the atom to which they are attached, form a substituted or unsubstituted ring; R4 and R5, together with the atom to which they are attached, form a substituted or unsubstituted ring; and the ring formed by R1 and R2 is identical to the ring formed by R4 and R5. [claim10] 10. The method of claim 1, where R7, R8, R9, and R10 are each independently selected from the group consisting of hydrogen, alkyl, alkyoxy, and alkylamino. [claim11] 11. The method of claim 1, where R7, R8, R9, and R10 are each independently selected from the group consisting of cycloalkyl and heterocyclyl. [claim12] 12. The method of claim 1, where R7, R8, R9, and R10 are each independently selected from the group consisting of aryl, arylalkyl, and heteroaryl. [claim13] 13. The method of claim 1, where R7 and R9, together with the atoms to which they are attached, form a ring. [claim14] 14. The method of claim 13, where R8 and R10 are identical. [claim15] 15. The method of claim 11, where R7 and R9, together with the atoms to which they are attached, form a ring. [claim16] 16. The method of claim 15, where R8 and R10 are identical. [claim17] 17. The method of claim 1, where: R1 and R2 are aryl groups;R3 is hydrogen;R4 and R5 are aryl groups; and R6 is hydrogen. [claim18] 18. The method of claim 17, where: R1 and R2 are identical; and R4 and R5 are identical. [claim19] 19. The method of claim 18, where R1, R2, R4, and R5 are identical. [claim20] 20. The method of claim 1, where the chiral bishydroxamic acid ligand (I) is selected from the group consisting of: [claim21] 21. The method of claim 2, where the metal is selected from the group consisting of VO(OPr)i, VO(acac)2, VO(OEt)3, and MoO2(acac)2. [claim22] 22. The method of claim 5, where the organic hydroperoxide is selected from the group consisting of tert-butyl hydroperoxide and cumene hydroperoxide. [claim23] 23. The method of claim 5, where the organic hydroperoxide is tert-butyl hydroperoxide. [claim24] 24. The method of claim 5, where the organic hydroperoxide is cumene hydroperoxide. [claim25] 25. The method of claim 2, where the oxidation reagent is selected from the group consisting of tert-butyl hydroperoxide and cumene hydroperoxide. [claim26] 26. The method of claim 2, where the oxidation reagent is tert-butyl hydroperoxide. [claim27] 27. The method of claim 2, where the oxidation reagent is cumene hydroperoxide. [claim28] 28. The method of claim 1, where the oxidation reagent is hydrogen peroxide. [claim29] 29. The method of claim 2, where the oxidation reagent is hydrogen peroxide. [claim30] 30. A method of performing a catalytic asymmetric epoxidation comprising: reacting an alkene or cyclic alkene with catalytic amounts of a chiral bishydroxamic acid ligand and a metal, in the presence of an oxidation reagent, to produce a chiral epoxide, where the chiral bishydroxamic acid ligand is selected from the following formulae: where: R13, R14, R15, R16, R17, and R18 are each independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, heteroaryl, and arylalkyl;R19 and R20 are each independently selected from the group consisting of hydrogen, halogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, heteroaryl, and arylalkyl;R21, R22, R23, and R24 are each independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, heteroaryl, and arylalkyl;R25 and R26 are each independently selected from the group consisting of hydrogen, halogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, heteroaryl, and arylalkyl. [claim31] 31. The method of claim 1, where the alkene is of the formula (X): where: R23, R24, R25, and R26 are each independently selected from the group consisting of hydrogen, halogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, heteroaryl, and arylalkyl. [claim32] 32. The method of claim 1, where the alkene is a cyclic alkene of the formula (Xa): where: R27 and R28 are each independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, aralklyl, heteroaryl, halogen, and alkene;n is 1, 2, 3, 4, 5, or 6;each X is independently selected from the group consisting of CR'R'', -- NR' -- , and -- O -- ; R' and R'' are each independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxy, alkylamino, heterocyclyl, aryl, aralklyl, heteroaryl, and halogen. [claim33] 33. The method of claim 31, where the chiral oxidation product is of the formula (Xb): [claim34] 34. The method of claim 32, where the chiral oxidation product is of the formula (Xc): [claim35] 35. The method of claim 1, where the reacting step is carried out in a solvent. [claim36] 36. The method of claim 35, where the reacting step is carried out in a solvent selected from the group consisting of methylene chloride, toluene, chloroform, and ethyl acetate. [claim37] 37. The method of claim 1, where the reacting step is carried out at a temperature of about -20 to about 25 deg. C. [claim38] 38. The method of claim 1, where the reaction is carried out with about 0.001 to about 0.1 equivalents of the chiral bishydroxamic acid ligand (I). [claim39] 39. The method of claim 1, where the reaction is carried out with about 0.005 to about 0.05 equivalents of metal.
発明者/出願人（英語）	YAMAMOTO HISASHI BASAK ARINDRAJIT ZHANG WEI JAPAN SCIENCE AND TECHNOLOGY AGENCY UNIVERSITY OF CHICAGO
国際特許分類(IPC)	B01J  31/18      窒素，りん，ひ素またはアンチモンを含有するもの C07D 301/12      過酸化水素，または無機過酸化物または無機過酸を用いるもの C07D 301/14      有機過酸，またはその塩，その無水物またはそのエステルを用いるもの C07D 301/19      有機ハイドロパーオキサイドを用いるもの C07D 303/14      遊離の水酸基によるもの
参考情報 （研究プロジェクト等）	SORST Selected in Fiscal 2000