Table 5.

Ene-yne reaction of allyl 1,1-diphenylpropargyl ether (14) with 1 mol% of 4a–e at 80 °C (monitored by GC) after 6 and 24 h.

Catalyst	Conversion (%)
	After 6 h	After 24 h
4a	93	99
4b	87	87
4c	90	93
4d	60	73
4e	81	88