## Abstract Seventeen optically active substituted 1,3,4,5‐tetrahydro‐2__H__‐1,5‐benzodiazepine‐2‐thiones (1a to 1d, 2a to 2d, 3d to 3d, 4b to 4d and 5b to 5d) were synthesized by treating the corresponding optically active substituted 1,3,4,5‐tetrahydro‐2__H__‐1,5‐benzodiazepin‐2‐ones with Lawesso
Syntheses and CD studies of optically active substituted 1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-2-ones
✍ Scribed by Malik, Farnaz ;Hasan, Mashooda ;Khan, Khalid Mohammed ;Perveen, Shahnaz ;Snatzke, Günther ;Duddeck, Helmut ;Voelter, Wolfgang
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 973 KB
- Volume
- 1995
- Category
- Article
- ISSN
- 0947-3440
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✦ Synopsis
Abstract
A route to optically active variously substituted 4‐methyl‐ and 4‐methyl‐7‐substituted 1,3,4,5‐tetrahydro‐2__H__‐1,5‐benzo‐diazepin‐2‐ones as analogues of commercially available Lofendazam (7‐chloro‐5‐phenyl‐1,3,4,5‐tetrahydro‐2__H__‐1,5‐benzodiazepin‐2‐one, 1) was developed. Fortyone variously substituted optically active compounds having the same configuration were prepared and the UV and CD spectra of the parent compounds bearing no additional substitution in the benzene ring are discussed.
📜 SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract Trisubstituted 1,4,5,6,‐tetrahydro‐7__H__‐indolones are obtained in a one‐pot synthesis from conjugated nitroolefins and α‐ketoenamines derived from α‐amino esters and cyclohexane‐1,2‐dione. In some cases bicyclo[3.2.1]octan‐8‐one and 1,2‐oxazine __N__‐oxide derivatives are isolated.
An investigation of the molecular dynamics of substituted 1,3,4,5-tetrahydro-2H-l,Ibenzodiazepin-2-0ne derivatives revealed that these molecules adopt cycloheptadiene-like boat conformations. There is an equilibrium between the quasi-axial and the quasiequatorial conformer in which the quasi-axial c
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract 2a,4‐Disubstituted 5‐benzoyl‐2‐chloro/2,2‐dichloro‐2a,3,4,5‐tetrahydro‐azeto [1,2‐a] [1,5]benzodiazepin‐1 (2H)‐ones (**3a–h**) were synthesized by cycloaddition reactions of 2,4‐disubstituted 1‐benzoyl‐2,3‐dihydr o‐1__H__‐1,5‐benzodiazepines (**2a–h**) and ketenes, generated from chloro