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Facile Synthesis of Oxatricyclic Systems with Various Ring Sizes and Substituents

โœ Scribed by Sengodagounder Muthusamy; Srinivasarao Arulananda Babu; Chidambaram Gunanathan; Eringathodi Suresh; Parthasarathi Dastidar; Raksh Vir Jasra

Book ID
104202874
Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
220 KB
Volume
56
Category
Article
ISSN
0040-4020

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โœฆ Synopsis

AbstractรA series of a-diazo carbonyl compounds having cyclopentanone, cyclohexanone and substituted cyclohexanone units with different tether lengths have been synthesized using diazomethane solution or methanesulphonyl azide. The above synthesized a-diazo carbonyl compounds with rhodium(II) acetate dimer furnish cyclic ยฎve-or six-ring carbonyl ylide dipoles, which undergo facile 1,3-dipolar cycloaddition with different dipolarophiles to furnish the substituted and functionalized oxatricyclic systems having various ring sizes. Two X-ray crystallographic analyses of compounds 8b and 15a are reported to ยฎrmly establish the stereochemistry of the cycloadducts.

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