Strained Silacycles in Organic Synthesis: The Tandem Aldol−Allylation Reaction
摘要:
Allyl(crotyl)enolsilanes, when constrained in a five-membered ring with a 1,2-diol, react with aldehydes in a tandem aldol-allylation reaction to give polyketide fragments. These experimentally trivial and efficient reactions establish two new carbon-carbon bonds and up to four new stereocenters. The silane reagents, which owe their reactivity to strain release Lewis acidity, are easily prepared and stable to storage.
Strained Silacycles in Organic Synthesis: The Tandem Aldol−Allylation Reaction
摘要:
Allyl(crotyl)enolsilanes, when constrained in a five-membered ring with a 1,2-diol, react with aldehydes in a tandem aldol-allylation reaction to give polyketide fragments. These experimentally trivial and efficient reactions establish two new carbon-carbon bonds and up to four new stereocenters. The silane reagents, which owe their reactivity to strain release Lewis acidity, are easily prepared and stable to storage.
Strained Silacycles in Organic Synthesis: The Tandem Aldol−Allylation Reaction
作者:Xiaolun Wang、Qinglin Meng、Andrew J. Nation、James L. Leighton
DOI:10.1021/ja027655f
日期:2002.9.1
Allyl(crotyl)enolsilanes, when constrained in a five-membered ring with a 1,2-diol, react with aldehydes in a tandem aldol-allylation reaction to give polyketide fragments. These experimentally trivial and efficient reactions establish two new carbon-carbon bonds and up to four new stereocenters. The silane reagents, which owe their reactivity to strain release Lewis acidity, are easily prepared and stable to storage.