Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Todd R. Boehlow"'
Publikováno v:
The Journal of Organic Chemistry. 66:3111-3118
The oxidation of tyrosine ethyl ester (7) with Na(2)WO(4)/H(2)O(2) in ethanol, dimethyldioxirane in acetone, or methyltrioxorhenium/H(2)O(2) in EtOH gave the corresponding tyrosine oxime (8) in high yield. Controlled bromination of the aromatic ring
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 144:177-180
Approaches to the syntheses of 2- and 3-phosphonomethyl derivatives of arabinose via pentacovalent oxaphospholene methodology are outlined. Condensation of the requisite pentacovalent oxaphospholenes with either a mono-protected glyoxal derivative or
Autor:
P. Christopher Buxton, Victoria L. Waddington, Todd R. Boehlow, Brian A. Marples, Estella L. Grocock
Publikováno v:
Tetrahedron Letters. 39:1839-1842
Recyclable resin-bound and other trifluoromethyl aryl ketones are efficient catalysts for oxone ® mediated epoxidations.
Autor:
P. Christopher Buxton, Brian A. Marples, Julie N. Ennis, Victoria L. Waddington, Todd R. Boehlow
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :265-268
Relative rates of dimethyldioxirane oxidation of a number of para-substituted N,N-dimethylanilines in acetone at 5 °C are compared with those of reactions with methyl iodide and other oxidants. The reactions with dimethyldioxirane followed the Hamme
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 53:92-95
The title compound, C25H28O11, is formed by a homoaldol condensation of methyl [4-methoxy-2-(methoxymethylenoxy)phenyl]pyruvate followed by lactonization. The structure consists of a butenolide ring substituted at the 2 position with an arylmethyl
Publikováno v:
Tetrahedron Letters. 37:2717-2720
Alkenes are expoxidized with methyltrioxorhenium and urea-hydrogen peroxide adduct in CH2Cl2 solution.
Publikováno v:
Natural Product Letters. 7:1-6
The oxidation of tyrosine ethyl ester and O-benzyl protected o-tyrosine methyl ester with either sodium tungstate/hydrogen peroxide or DMD gave the corresponding tyrosine oximes in high yields. Controlled bromination of the aromatic ring gave either
Publikováno v:
The Journal of Organic Chemistry. 57:163-167
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 53:1947-1949
The crystal structure of the racemic title compound, C 18 H 20 NO 6 P (m.p. 428-431 K), has been determined by X-ray diffraction. The title compound consists of a tetrahedral P atom bonded to two methoxy groups, and an alkyl chain. The alkyl chain is
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 51:2654-2656
The crystal structure determination of the title compound, C 11 H 12 BrNO 4 , m.p. 408.5-409.3 K, shows the oxime geometry to be E (trans). In the crystal structure, two molecules form a head-to-tail hydrogen-bonded cyclic dimer, with the hydrogen bo