Cyclopentanone synthesis

Details Cyclopentanone synthesis Cyclopentanone synthesis

1979-12-03

1981-09-08

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

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

Patent

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.

REFERENCES:
patent: 4097531 (1978-06-01), Bledsoe et al.
patent: 4119652 (1978-10-01), Knowles et al.
Chemical Abstracts, vol. 78:57872a, (1973).
Ratcliff et al., J. Org. Chem, v. 35, pp. 4000-4002, (1970).
Montgomery et al., J. Am. Chem. Soc.,v. 89, pp. 6556-6564, (1967).
Sakai et al., Tetrahedron Letters, pp. 1287-1290, (1972).
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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