ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Condensed Ring System, V. Synthesis and Spectroscopic Properties of cis- and trans- 1,5-Dimethyl-1,3,7-diheterobicycol-[3.3.0]octanesThe synthesis of 1,5-dimethyl-3,7-dithiabicyclo [3.3.0]octane yields the cis (4a) and the trans-isomer (5a) in a ratio of 1:1 Small amounts of the cis-(4b) and the trans-isomer (5b) of 1,5-dimethyl-3-oxa-7-thiabicyclo[3.3.0]octane are formed as side products. The configuration of the isomers can be deduced from their n.m.r. spectra by comparing the spectra with those of dihetero[3.3.n.]propellanes1) having cis-configuration.
Notes:
Bei der Synthese des 1,5-Dimethyl-3,7-dithiabicyclo[3.3.0]octans entstehen das cis (4a) und trans-Isomere (5a) im Verhältnis 1:1. Als Nebenprodukte erhält man in geringen Mengen das cis- (4b) und trans-Isomere (5b) des, 1,5-Dimethyl-3-oxa-7-thiabicyclo [3.3.0]octans. Der Vergleich ihrer 1H-NMR-Spektren mit denen der cis-konfigurierten Dihetero[3.3.n]propellane1) ermöglicht die Konfigurationszuordnung.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19731060726
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