Synthesis of the macrocyclic thiocrown ethers 1,4,7,10,13,16,19-heptathiaheneicosane (21-S-7) and 1,4,7,10,13,16,19,22-octathiatetraeicosane (24-S-8)
โ Scribed by Jilles J.H. Edema; Jan Buter; Richard M. Kellogg
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- French
- Weight
- 248 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4020
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โฆ Synopsis
The synthesis and characterization of the two macrocyclic s&ides, 1,4,7,lO,l3,16,19-heptathiaheneicosane (21-S-7) and 1,4,7,10,13,16,19,22-octathiatetraeicosane (24-S-8), are describedstarting from different combmationsof dithiols and dichlorides of differing chain lengths. C&O, is used for the cyclizations.
๐ SIMILAR VOLUMES
The title compound, C~22~H~28~O~8~, was prepared from the natural diterpenoid macrocalyxin J by two steps. It is built up from five fused rings: three six-membered rings and two five-membered rings. Two molecules are present in the asymmetric unit; both independent molecules have the same absolute c