Crossed aldol reaction of trimethylsilyl enol ether with aldehyde is successfully performed with the aid of catalytic amount of rhodium complex, [(COD)Rh(DPPB)]+X-(X = PF6 and C104) or Rh4(C0)12, under neutral conditions.
Aldol-type reactions between trimethylsilyl enol ethers and acetals with the aid of rhodium complex
โ Scribed by Susumu Sato; Isamu Matsuda; Yusuke Izumi
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- French
- Weight
- 229 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Aldol-type reactions of trimethylsilyl enol ethers with acetals, ketals, and orthoesters are successfully performed with the aid of a catalytic amount of rhodium complex, Rh4(C0)12 or [Rh(COD)(DPPB)]+ClO,-, under neutral conditions.
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## A stoicbiometric Itmomtofthccbiral~1turntdouttos tlaxssivcly promote the aqmmehic aldol rcactioa of al&hy&s with cd silyl ethers and the rdowitlg asymmettic leductioa in om pot to affcrd syI&l3diols willlbighetity.
A Comprehensive Study of [2 + 2] Cycloadditions and Ene Reactions of Alkynyl Chromium and Tungsten Carbene Complexes with Enol Ethers and Ketene Acetals and of the Stereochemistry of the Electrocyclic Ring Opening of Cyclobutenyl Carbene Complexes. -Cyclobutenyl esters and their ring opened isomers