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85 results on '"Nucleophilic reactions -- Research"'

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1. Rearrangement, nucleophilic substitution, and halogen switch reactions of alkyl halides over NaY zeolite: formation of the bicyclobutonium cation inside the zeolite cavity

2. Perfluoroalkylated 4,13-diaza-18-crown-6 ethers: Synthesis, phase-transfer catalysis, and recycling studies

3. Nucleophilicites of primary and secondary amines in water

4. Nucleophilic substitution reactions of N-chloramines: Evidence for a change in mechanism with increasing nucleophile reactivity

5. Ugi multicomponent reaction followed by an intramolecular nucleophilic substitution: Convergent multicomponent synthesis of 1-sulfonyl 1,4-diazepan-5-ones and of their benzo-fused derivatives

6. Nucleophilic substitution at silicon ([S.sub.N]2@Si) via a central reaction barrier

7. Chemoselective nucleophilic fluorination induced by selective solvation of the [S.sub.N]2 transition state

8. Enolpyruvyl activation by enolpyruvylshikimate-3-phosphate synthase

9. Heterogeneous diazo-transfer reaction: A facile unmasking of azide groups on amine-functionalized insoluble supports for solid-phase synthesis

10. High nucleophilicity of cyclic amidocarbene toward aryl isocyanates, new approach to spiro[azetidinone-4,3'-indolinone] derivatives

11. Distinguishing the early and late transition states and exploring the validity of [sigma]->[sigma.sup.*#], [sigma.sup.#]->[sigma.sup.*], and [sigma]->[pi*.sub.C=O] concepts in diastereoselection from NBO analysis

12. Infrared and electronic spectroscopy of a model system for the nucleophilic substitution intermediate in the gas phase: The C-N valence bond formation in the benzene-ammonia cluster cation

13. Nucleophilic perfluoroalkylation of aldehydes, ketones, imines, disulfides, and diselenides

14. Synthesis of N,N-bis(3-butenyl)amines from 2-azaallyl dication synthetic equivalents and conversion to 2,3,6,7-tetrahydroazepines by ring-closing metathesis

15. Crystal structures of salinosporamides A (NPI-0052) and B (NPI-0047) in complex with the 20S proteasome reveal important consequences of beta-lactone ring opening and a mechanism for irreversible binding

16. Solution kinetics of CC-1065 A-ring opening: Substituent effects and general acid/base catalysis

17. Theoretical study on the lithium--halogen exchange reaction of 1,1-dihaloalkenes with methyllithium and the nucleophilic substitution reaction of the resulting alpha-halo alkethyllithium

18. Reactivities of mononuclear non-heme iron intermediates including evidence that iron(III) - hydroperoxo species is a sluggish oxidant

19. Rotating-top approximation in reduced-dimensionality quantum calculations of rate constants: Application to complex-forming nucleophilic substitution

20. Synthetic utilization of polynitroaromatic compounds. 3. Preparation of substituted dibenz[b,f][1,4]oxazepin-11(10H)-ones from 2,4,6-trinitrobenzoic acid via nucleophilic displacement of nitro group

21. Modeling S(sub N)2 reactions in methanol solution by ab initio calculation of nucleophile solvent-substrate clusters

22. Synthesis of 6,19-sulfamidate bridged pregnanes

23. Dialkylaminopyridine-functionalized mesoporous silica nanosphere as an efficient and highly stable heterogeneous nucleophilic catalyst

24. Theoretical study of nuecleophilic substitution at sulfur in sulfinyl derivatives

25. Mechanisms of NO release by N(super 1)-nitrosomelatonin: Nucleophilic attack versus reducing pathways

26. Synthetic tetstudies in the intramolecular carbocyclization of N-acyloxyiminium ions: Stereoelectronic and steric implications of nucleophilic alkene, alkyne, and allene hers

27. Nucleophilic trifluoromethylation of imines using the CF3I/TDAE reagent

28. m-CPBA/KOH: An efficient reagent for nucleophilic epoxidation of gem-deactivated olefins

29. Site-directed mutagenesis of active site residues of phosphite dehydrogenase

30. A stereoselective and atom-efficient approach to multifunctionalized five- and six-membered rings via a novel Michael-initiated intramolecular Diels-Alder furan reaction

31. Hydroxylamines as oxygen atom nucleophiles in transition-metal-catalyzed allylic substitution

32. Is the allylpalladium structure altered between solid and solutions?

33. Structural analysis of botulinum neurotoxin type E catalytic domain and its mutant Glu212 -> Gln reveals the pivotal role of the Glu212 carboxylate in the catalytic pathway

34. Nucleophilic substitution of hydrogen in heterocyclic chemistry

35. Gas -phase SN2 and bromine abstraction reactions of chloride ion with bromomethane: Reaction cross sections and energy disposal into products

36. Could ionic gamma-elimination be concerted: clocking the internal displacement across a cyclobutane ring

37. Nucleophilic or electrophilic phosphinidene complexes MLn=PH; what makes the difference?

38. Is the tert-butyl chloride solvolysis the most misunderstood reaction in organic chemistry? Evidence against nucleophilic solvent participation in the tert-butyl chloride transition state and for increased hydrogen bond donation to the 1-adamantyl chloride solvolysis transition state

39. Synthesis and reactions of the cis- and trans-oxides derived from 3-(benzyloxy methyl)cyclohexene

40. Nucleophilic substitution on the ultimate hepatacarcinogen N-(sulfonatooxy)-2-(acetylamino)fluorene by aromatic amines

41. 1,2- vs 1,4-addition of nucleophilic organometallics to nonracemic 2-(1-naphthyl)- and 2-cinnamyl-1,3-oxazolidines

42. 2,3-dihalo-1-(phenylsulfonyl)-1-propenes as versatile reagents for the synthesis of annulated furans and cyclopentenones

43. Tunable regioselectivity associated with the reaction of 2, 3-dihalo-1-(phenylsulfonyl)-1-propenes with ambident nucleophilic reagents

44. Kinetics of hydroxide and nitromethide ion addition to substituted beta-nitrostyrenes in Me2SO-water mixtures. Solvent dependence of pi-donor substituent effects and of intrinsic rate constants

45. Fluorinated tertiary alcohols and alkoxides from nucleophilic trifluoromethylation of carbonyl compounds

46. Nucleophilic addition of 2'-deoxynucleosides to the o-quinone methides 10-(acetyloxy)- and 10-methoxy-3,4-dihydro-9(2H)-anthracenone

47. Highly diastereoselective nucleophilic addition to myrtenal: straightforward synthesis of an enantiopure scorpionate ligand

48. Palladium-catalyzed asymmetric allylic alkylation of meso- and dl-1,2-divinylethylene carbonate

49. Ring expansions of simple cyclic conjugated cyclopropyl ketones by the Nozaki method are not regiospecific

50. Copper(I)-catalyzed one-pot synthesis of 2H-1,4-benzoxazine-3-(4H)-ones from o-halophenols and 2-chloroacetamides

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