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Additions of fluorocarbenes to norbornadiene by linear cheletropic reaction

✍ Scribed by Charles W. Jefford; nTanda Kabengele; Josef Kovacs; Ulrich Burger


Publisher
Elsevier Science
Year
1974
Tongue
French
Weight
203 KB
Volume
15
Category
Article
ISSN
0040-4039

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✦ Synopsis


If we accept the simplified description of a c2 carbene as consisting of the superposition of a carbocation and a carbanion', then in principle it should


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Highly Enantioselective Conjugate Additi
✍ Paul K. Fraser; Simon Woodward πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 English βš– 162 KB πŸ‘ 2 views

## Abstract 2‐Hydroxy‐2′‐alkylthio‐1,1′‐binaphthyl compounds are catalytic promoters of the 1,4‐addition of AlMe~3~ to linear aliphatic enones in THF at βˆ’40 to βˆ’48 °C in the presence of [Cu(MeCN)~4~]BF~4~. At ligand loadings of 5–20 mol %, enantioselectivities of 80–93 % are realised for most subst