Aldol reactions of bidentate aldehydes and cis-1-arylsulfonamido-2-indanyl ester derived titanium enolates proceed with excellent syn-diastereoselectivities and good to excellent isolated yields.
Syn selective aldol reactions of titanium and zirconium dienolates.
β Scribed by James S. Panek; Oleh A. Bula
- Book ID
- 104217454
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- French
- Weight
- 216 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
The low temperature transmetallation of the lithium dienolate of 2-cyclohexene-l-one or P-cyclopentene-1 -one with chlorotitanium triisopropoxide or bis(n5-cyclopentadienyl)dichlorozirconium gives the Z,E-titanium or zirconium dienolate. These transition metal dienolates participate in aldol reactions with achiral aldehydes resulting in the direct formation of a syn B-hydroxy enone system.
π SIMILAR VOLUMES
## 1998 hydroxycarboxylic acids hydroxycarboxylic acids (ether carboxylic acids) (acyclic compounds) and esters P 0280 ## 01 -075 Ester Derived Titanium Enolate Aldol Reaction: Highly Diastereoselective Synthesis of syn-and anti-Aldols. -Titanium enolates derived from esters (I) undergo aldol rea
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