Cyclopentanone synthesis

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

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568312, 568322, 568323, 568343, 568347, 568348, 568351, 568352, C07C 6903, C07C 4554

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active

042886139

ABSTRACT:
A method of synthesis of cyclopentanones comprising cyclizing a 4-pentenal, preferably under an ethylene atmosphere, in the presence of a catalytically effective amount of a cyclizing, rhodium(I) para-substituted triarylphosphine catalyst.

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Ratcliff et al., J. Org. Chem, v. 35, pp. 4000-4002, (1970).
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van der Ent et al., Inorg. Syn., v. 14, pp. 92-93, (1973).
Sharpless et al., J. Am. Chem. Soc.,v. 97, pp. 5927-5928, (1975).
Lochow et al., J. Am. Chem. Soc., v. 98, pp. 1281-1283, (1976).

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