61 results on '"Beam, Charles F."'
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2. Preparation of 2 H-spiro[benzo[ d]isothiazole-3,3′-pyrazole]-1, 1-dioxide-2′(4′ H)-carboxylates from dilithiated C(α), N-carboalkoxyhydrazones and methyl 2-(aminosulfonyl)benzoate.
3. Preparation of 2-(1 H-pyrazol-5-yl)benzenesulfonamides from polylithiated C(α),N-carbo- tert-butoxyhydrazones and methyl 2-(aminosulfonyl)benzoate.
4. Preparation of spiro[benzoisothiazole-isoxazole] dioxides from dilithiated c(α), O-oximes and methyl 2-(aminosulfonyl)benzoate.
5. The preparation of 3-substituted 1,2-benzisothiazole-1,1-dioxides from the condensation-cyclization of dilithiated β-ketoesters with methyl 2-(aminosulfonyl)benzoate or 1,2-benzisothiazol-3(2 H)-one-1,1-dioxide.
6. Preparation of 2-(1-phenyl-1 H-pyrazol-5-yl)benzenesulfonamides from polylithiated C(α), N-phenylhydrazones and methyl 2-(aminosulfonyl)benzoate.
7. The preparation of benzoisothiazolo[1,2- b][1,2]isoquinolin-11-one-1,1-dioxides from dilithiated ortho-toluic acids and lithiated methyl 2-(aminosulfonyl)benzoate.
8. The preparation of 3-substituted 1,2-benzisothiazole 1,1-dioxides from lithiated intermediates or grignard reagents and methyl 2-(aminosulfonyl)benzoate.
9. Preparation of 1 H-pyrazole-5-carboxamides from dilithiated C(α), N-phenylhydrazones and lithiated ethyl oxanilates or lithiated ethyl oxamate.
10. Preparation of substituted 1,2-Dihydro-3 H-pyrazol-3-ones from polylithiated 2′-phenylphenylacetohydrazides and aromatic esters.
11. A New Series of Proton/Charge Transfer Molecules: Synthesis and Spectral Studies of 2-(5-Aryl-1-carbomethoxy-1H-pyrazol-3-yl)phenols.
12. A new preparation of substituted 4 H-1-benzothiopyran-4-ones from c(α) N-benzoylhydrazones or c(α) N-carboalkoxyhydrazones and methyl thiosalicylate.
13. The preparation of N-(1 H-pyrazol-3-yl)arylamides and 1 H-pyrazol-3-amines from polylithiated C(α), N-thiosemicarbazones and C(α), N-semicarbazones.
14. Preparation of 4-hydroxy-3-substituted, 2 H-1-benzopyran-2-ones and 2 H-1-benzothiopyran-2-ones from carboxylic esters and methyl salicylates or methyl thiosalicylate.
15. The preparation of quinolines and related fused-ring heterocycles from the dianions of benzoylacetone, certain cyclic ketone oximes, or certain substituted hydrazones.
16. The preparation of N-carboalkoxypyrazoles and N-phenylpyrazoles from C(α)-dianions of carboalkoxyhydrazones and phenylhydrazones.
17. The preparation of selected benzopyrano[3,4- b]pyrazoles by the condensation of c(α), n-dilithiocarboalkoxyhydrazones and salicylate esters.
18. The preparation of phenacylpyrazoles, acylpyrazoles, imidazolylisoxazoles and imidazolylpyrazoles from c(α)-dianions of oximes, phenylhydrazones and acylhydrazones.
19. A new method for the preparation of 2-carhoalkoxypyrazolo [5,1 - B] quinazolin-9(1 H)ones.
20. Preparation of 2-isoxazolines from C(α), O-dilithiooximes and aldehydes and ketones.
21. The reactions of C(α), O-dilithiooximes, C(α), N-dilithiophenylhydrazones, and C(α), N,N-trilithiohydrazones with diethyl oxalate to give biisoxazoles, bipyrazoles, and pyridazones.
22. A new synthesis of substituted pyrazoles from 1,4-dianions of phenylhydrazones having an α-hydrogen.
23. The preparation of 4,5-dihydro-2 H-benz[ e]indazoles from dilithiated 2-tetralone phenylhydrazone and aromatic esters.
24. The preparation of 4-oxo- N-aryl-4 H-1-benzopyran-2-acetamides by the condensation/cyclization of trilithiated acetoacetanilides with lithiated methyl salicylates.
25. The preparation and reactions of C(α), N-dilithiocarboalkoxyhydrazones.
26. The preparation of 5-phenacylisoxazoles and 5-hydroxyphenyl-isoxazoles and -pyrazoles by the condensation of C( a)-dianions with ethyl benzoylacetate and methyl salicylate.
27. Preparation of 2,4-diarylquinolines and substituted dihydrobenz-[c]acridines by the condensation of certain c( α), o-dilithiooximes with 2-aminobenzophenones.
28. A new synthesis of 2-pyrazolin-5-ones from the condensation of C(α), N-dilithiophenylhydrazones with diethyl carbonate.
29. Reactions of c(α), N-dilithiophenylhydrazones with aldehydes. Acid-cyclization to 2-pyrazolines.
30. Reactions of dilithiooximes, dilithiophenylhydrazones and trilithiohydrazones with nitriles. Acid-cyclization to isoxazoles or pyrazoles.
31. An improved synthesis of 3,5-disubstituted isoxazoles and pyrazoles from C(α), O-dilithiooximes and C(α), N-dilithiophenylhydrazones.
32. A facile preparation of 4-quinolinols by the condensation of dilithiobenzoylacetone or C(α), O-dilithiooximes with methyl anthranilate or 5-chloroisatoic anhydride.
33. bis-Isatoic anhydrides I. The preparation of bis-isatoic anhydrides.
34. The Synthesis of 2-Carbomethoxy-2-carbomethoxymethyl-2,3-dihydro-4(1 H)quinazolinones.
35. An easy method for the preparation of 4-acylisoxazoles from C(α),O-dianions of oximes.
36. The preparation of heterocyclic materials from 2-isocyanatobenzoyl chloride and difunctional nucleophiles.
37. ChemInform Abstract: Preparation of NH-Pyrazoleacetic Acid Anilides from Trilithiated Acetoacetanilide, Select Aromatic Esters, and Hydrazine.
38. ChemInform Abstract: Preparation of 2H-spiro[Benzo [d]isothiazole-3,3′-pyrazole]-1,1-dioxide-2′(4′H)-carboxylates from Dilithiated C(α), N-Carboalkoxyhydrazones and Methyl 2-(Aminosulfonyl)benzoate.
39. ChemInform Abstract: Preparation of 2-[1-Phenyl-1H-pyrazol-5-yl]benzoic Acids from Dilithiated C(α),N-Phenylhydrazones and Methyl Hydrogen Phthalate.
40. ChemInform Abstract: New Strong Base Synthesis of Symmetrical 1,5-Diaryl-1,3,5-pentanetriones from Acetone and Benzoate Esters.
41. ChemInform Abstract: Preparation of 4,5-Dihydronaphth[2,1-c]isoxazoles from Dilithiated 2-Tetralone Oxime and Select Esters.
42. ChemInform Abstract: Preparation of 2-(1H-Pyrazol-5-yl)benzenesulfonamides from Polylithiated. C(α),N-Carbo-tert-butoxyhydrazones and Methyl 2-(Aminosulfonyl)benzoate.
43. Preparation of spiro[Benzoisothiazole-Isoxazole] Dioxides from Dilithiated C(α),O-Oximes and Methyl 2-(Aminosulfonyl)benzoate.
44. The Preparation of 3,3a,4,5-Tetrahydronaphth[1,2-c]isoxazoles from Dilithiated 1-Tetralone Oxime and Select Aromatic Aldehydes.
45. Preparation of 2-(1-Phenyl-1H-pyrazol-5-yl)benzenesulfonamides from Polylithiated C(α),N-Phenylhydrazones and Methyl 2-(Aminosulfonyl)benzoate.
46. The Preparation of Benzoisothiazolo[1,2-b][1,2]isoquinolin-11-one-1,1-dioxides from Dilithiated ortho-Toluic Acids and Lithiated Methyl 2-(Aminosulfonyl)benzoate.
47. Preparation of 4-Anilino-6-aryl-2H-pyran-2-ones from Trilithiated Acetoacetanilides and Aromatic Esters.
48. The Preparation of 5-Aryl-5-methyl-4,5-dihydroisoxazoles from Dilithiated C(α),O-Oximes and Select Acetyl Ketones.
49. ChemInform Abstract: Preparation of 1H-Pyrazole-5-carboxamides from Dilithiated C(α),N-Phenylhydrazones and Lithiated Ethyl Oxanilates or Lithiated Ethyl Oxamate.
50. ChemInform Abstract: Preparation of Substituted 1,2-Dihydro-3H-pyrazol-3-ones from Polylithiated 2′-Phenylphenylacetohydrazides and Aromatic Esters.
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