Ultrasound-assisted self-metathesis reactions of monounsaturated fatty acids | OCL

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Table 1

Results of catalyst-screening for self-metathesis reactions of oleic acid (1)^[a].


Entry	Catalyst	Conv. (%)^[b]	2 (%), E/Z^[c]	3 (%)^[c]

1	C1	86	82, 20/1	75
2	C2	96	73, 25/1	76
3	C3	91	67, 7/1	63
4	C4	94	66, 11/1	58
5	C5	95	69, 13/1	61
6	C6	96	78, 20/1	63

^[a]

Reaction conditions: 1 (20 mmol), C1–C6 (0.1 mol%), neat, magnetic stirring, 45 °C, 24 h.

^[b]

Substrate conversion was determined by GC, with pentadecanoic acid as the internal reference.

^[c]

Yields were determined after purification by flash chromatography on silica gel.

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