Related Experiment Video
Updated: Jun 16, 2026

Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
Published on: January 3, 2018
New Approach to 4-Phenyl-β-aminotetralin from 4-(3-Halophenyl)tetralen-2-ol Phenylacetate
Adam S Vincek1, Raymond G Booth
1Department of Medicinal Chemistry, PO Box 100485, College of Pharmacy, University of Florida, Gainesville, FL 32610-0485, USA.
Abstract:
Mixed trifluoroacetyl phenylacetyl anhydride and 3-halostyrenes (fluoro, chloro, and bromo) or vinylcycloalkanes (cyclohexyl, cyclooctyl), undergo cascade Friedel-Crafts cycli-acylalkylation, enolization, and O-acylation to give 4-substituted tetralen-2-ol phenylacetates, without additional solvent in good yields. Base alcoholysis of 4-phenyltetralen-2-ol phenylacetate reveals the tetral-2-one for asymmetric transfer hydrogenation. Bromophenyltetralen-2-ol phenylacetate undergoes Suzuki coupling, and provides a short route to trans-4-phenyl-β-aminotetralin.
Related Concept Videos
Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview
Acid Halides to Amides: Aminolysis
In the first step of the aminolysis mechanism, the amine attacks the carbonyl carbon of the acyl chloride to form a tetrahedral intermediate. In the second step, the carbonyl group is re-formed with the elimination of a chloride...
Preparation of 1° Amines: Gabriel Synthesis
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
α-Alkylation of Ketones via Enolate Ions
Diazonium Group Substitution: –OH and –H
Preparation of Alkynes: Alkylation Reaction
Alkylation of terminal alkynes with primary alkyl halides in the presence of a strong base like sodium amide is one of the common methods for the synthesis of longer carbon-chain alkynes. For example, treatment of 1-propyne with sodium amide followed by reaction with ethyl bromide yields 2-pentyne.

