ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Reactions with Allylidenephosphoranes, IV. An Easy Synthesis of Cyclopentadienones (Cyclones)The allylidenephosphoranes 2 react with α-ketocarbonyl chlorides 3 readily to afford the cyclopentadienones 4 and their Diels-Alder dimers 5. With an excess of 2a, 4a undergoes competitive Michael additions yielding a mixture of 4-allylidene-2-cyclopentenone 6 and 4-(1-propenyl)-2-cyclopentenone 7.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19841170820