Aldol-cyclization reaction sequence for the synthesis of tetrahydrofurans
โ Scribed by Michael A. Calter; Priyantha M. Sugathapala; Cheng Zhu
- Book ID
- 104257128
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 194 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
The aldol reactions of ct-diazo-13-ketoesters with a variety of aldehydes produced adducts which underwent Rh(II)-catalyzed O-H insertion reaction to yield highly substituted tetrahydrofurans. Alkylation and decarboxylation of these tetrahydrofurans formed a wide
๐ SIMILAR VOLUMES
This paper describes a general procedure for the efficient preparation of highly substituted tetrahydrofurans. The condensation of ~-diazo-13-ketoester-derived enolates with orthoesters yields diazoacetals la-ld. These compounds undergo formal C-O insertion reactions in the presence of Rh2(OAc)4 to
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