Related Experiment Video
Updated: Jul 16, 2026

Preparation of Enantiopure Non-Activated Aziridines and Synthesis of Biemamide B, D, and epiallo-Isomuscarine
Published on: June 13, 2022
Solid-phase preparation of a pilot library derived from the 2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-amine scaffold
Damien Boeglin1, Dominique Bonnet, Marcel Hibert
1Département de Pharmacochimie de la Communication Cellulaire, Institut Gilbert Laustriat, LC1-UMR CNRS/ULP 7175, Faculté de Pharmacie de Strasbourg, 74 route du Rhin BP24, 67401 Illkirch, Cedex, France.
Abstract:
A convenient and reliable solid-phase strategy for the synthesis of di- and trisubstituted benzazepine derivatives was developed. 5-Amino-1-tert-butoxycarbonyl-2,3,4,5-tetrahydro-1H-benzo[b]azepine and 5-amino-1-tert-butoxycarbonyl-7-bromo-2,3,4,5-tetrahydro-1H-benzo[b]azepine G-protein coupled receptor-targeted (GPCR-targeted) scaffolds were efficiently synthesized in a six-step solution-phase process, immobilized on the acid-labile FMPB-AM resin, and further functionalized through acylation, sulfonation, reductive amination, alkylation, and Suzuki or Buchwald-Hartwig cross-coupling reactions. The efficacy of this strategy was exemplified by the preparation of an original pilot library of di- and trisubstituted benzazepines obtained in high purity as assessed by both 1H NMR and liquid chromatography/mass spectrometry (LC/MS) analysis.
Related Concept Videos
Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview
Preparation of 1° Amines: Azide Synthesis
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
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...
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Preparation of 1° Amines: Hofmann and Curtius Rearrangement Mechanism
![Solid-phase Synthesis of [4.4] Spirocyclic Oximes](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F58508.jpg&w=3840&q=50)
