𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Compounds with bridgehead nitrogen. 63—NMR spectra and stereochemistry of perhydropyrido[3,2,1-j,k][3,1]benzoxazepines

✍ Scribed by Trevor A. Crabb; Asadollah Fallah


Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
417 KB
Volume
28
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The configurations and conformations of diastereoisomeric 1‐(decahydroquinolin‐8‐yl)butan‐2‐ols and of perhydropyrido[3,2,1‐j,k][3,1]benzoxazepines resulting from ring closure of these compounds with formaldehyde have been assigned by ^1^H and ^13^C NMR spectroscopy.


📜 SIMILAR VOLUMES


Compounds with bridgehead nitrogen 68—NM
✍ Trevor A. Crabb; Simon T. Ingate; Thomas G. Nevell 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 238 KB

## Abstract Low‐temperature ^13^C NMR spectroscopy shows perhydropyrido [1,2‐__c__] [1,3]oxazine to adopt a conformational equilibrium in CD~2~Cl~2~–CFCl~3~ solution containing 98% __trans__ fused conformer in equilibrium with 2% __O__‐outside‐__cis__ fused conformer at 203 K. A similar equilibrium

Compounds with bridgehead nitrogen. 48—s
✍ Trevor A. Crabb; Philip A. Jupp; Christopher H. Turner 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 390 KB

## Abstract Six of the eight possible diastereoisomeric 5‐methylperhydropyrido[3,2,1‐__i__,__j__][3,1]benzoxazines have been synthesized, and the utility of the C‐3 methylene proton NMR parameters [__J__(3ax3eq) and Δ3ax3eq] in the assignment of configurations has been demonstrated.

Compounds with bridgehead nitrogen. 44—t
✍ Trevor A. Crabb; Philip A. Jupp; Yoshito Takeuchi 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 270 KB

## Abstract The 270 MHz NMR data on __trans__‐ and __cis__‐(H‐4a, H‐7)‐7‐ethylperhydropyrido[1,2‐__c__][1,3]thiazine show heavy conformational bias to the __trans__‐ and __S__‐inside __cis__‐fused conformations, respectively. Comparison of the ^13^C NMR spectra of these anancomeric systems with the

Compounds with bridgehead nitrogen 53—13
✍ Trevor A. Crabb; Olive G. Roch; Brian Wood 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 337 KB

The configurations and preferred conformations of some diastereoisomeric perhydronaphthaleno[2,1-elpyrido[ 1,2c][ 1,310xazines have been assigned by "C NMR spectroscopy. These results require reversal of two previous tentative configurational assignments based on 'H NMR spectroscopy, and also indica

Compounds with bridgehead nitrogen. 40—S
✍ Trevor A. Crabb; Jacqueline S. Mitchell; Christopher H. Turner 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 481 KB

## Abstract Seven of the possible diastereoisomeric perhydronaphthaleno[3,4‐__e__]pyrido[1,2‐__c__][1,3]oxazines have been synthesized and the configurations and preferred conformations of these assigned on the basis of IR and ^1^H NMR spectroscopy and the application of conformational principles.