The Preparation of 4,5-Dihydro-5-Phenyl-5-(2-Phenylethenyl)Isoxazoles, 4,5-Dihydro-5-Methyl-5-(2-Phenylethenyl)Isoxazoles, or 4,5-Dihydro-5,5-DI-(2-Phenylethenyl)Isoxazoles from Dilithiated C(α),O-Oximes and Select α,β–-Unsaturated Ketones

Jessica D. Townsend Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC, 29424

Wayne Kelley Jr. Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC, 29424

Kelly L. Rose Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC, 29424

Deborah A. Schady Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC, 29424

Jennifer R. Downs Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC, 29424

Heather A. Greer Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC, 29424

Stefan J. Pastine Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC, 29424

Charles F. Beam Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC, 29424

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Abstract

C(α),O-oximes were dilithiated with lithium diisopropylamide and condensed with three α,β-unsaturated ketones: (2E)-1,3-diphenyl-2-propen-1-one, or (1E, 4E)-1,5-diphenyl-1,4-pentadien-3-one, or (3E)-4-phenyl-3-buten-2-one, followed by immediate acid cyclization to variously substituted 4,5-dihydroisoxazoles: 4,5-dihydro-5-phenyl-5-(2-phenylethenyl)isoxazoles, 4,5-dihydro-5-methyl-5-(2-phenylethenyl)isoxazoles, or 4,5-dihydro-5,5-di-(2-phenylethenyl)-isoxazoles.

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The Preparation of 4,5-Dihydro-5-Phenyl-5-(2-Phenylethenyl)Isoxazoles, 4,5-Dihydro-5-Methyl-5-(2-Phenylethenyl)Isoxazoles, or 4,5-Dihydro-5,5-DI-(2-Phenylethenyl)Isoxazoles from Dilithiated C(α),O-Oximes and Select α,β–-Unsaturated Ketones

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The Preparation of 4,5-Dihydro-5-Phenyl-5-(2-Phenylethenyl)Isoxazoles, 4,5-Dihydro-5-Methyl-5-(2-Phenylethenyl)Isoxazoles, or 4,5-Dihydro-5,5-DI-(2-Phenylethenyl)Isoxazoles from Dilithiated C(α),O-Oximes and Select α,β–-Unsaturated Ketones

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