𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Clay-catalyzed solventless addition reactions of furan with α,β-unsaturated carbonyl compounds

✍ Scribed by Martín Avalos; Reyes Babiano; JoséL. Bravo; Pedro Cintas; JoséL. Jiménez; Juan C. Palacios

Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
204 KB
Volume
39
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

The reaction of furan with a,~ansaturated carbonyl dienophiles catalyzed by KI0 montmorillonite in the absence of organic solvents produces the corresponding Diels-Alder adducts and, in the case of methyl vinyl ketone, Michael-type products, under much milder conditions than the conventional protocols. The results are consistent with acid catalysis on the clay ste'face. Acrylates gave lower yields and/or decomposition products. The reaction can be extended to alkynic substrates such as DMAD to afford cycloadducts in good yields.

📜 SIMILAR VOLUMES

Reaction of Anthrahydroquinones with α,β
Reaction of Anthrahydroquinones with α,β-Unsaturated Carbonyl Compounds
✍ Krohn, Karsten ;Miehe, Frank 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 440 KB

## Abstract Except from 1,4,9,10‐anthracenetetrols, 9,10‐anthrahydroquinones (derived from the quinones **5a** and **18**– **21**) react with unhindered Michael acceptors such as acrylate, acrylonitrile, acrylaldehyde, and methyl vinyl ketone with addition at C‐9 or C‐10 to yield anthrones. The dir

Reaction of lithium dialkylcuprates with
Reaction of lithium dialkylcuprates with β-acetoxy α,β-unsaturated carbonyl compounds—a new synthesis of substituted α,β-unsaturated carbonyl compounds.
✍ Charles P. Casey; David F. Marten; Roger A. Boggs 📂 Article 📅 1973 🏛 Elsevier Science 🌐 French ⚖ 166 KB

Lithium diorganocuprates are now widely used in conjugate additions to a,a-unsaturated car-bony1 compounds' and in coupling reactions with alkyl halides2, allyli~acetates~, and other compounds possessing good leaving groups. Here we report a new reaction of lithium dialkylcuprates which is formally