Table 3. CM of 10 and 12 performed in the presence of catalysts 1, 2 and HGII.

Entry	Catalyst	Isolated yield (%)	E/Z
1	1a	55	9.2
2	1b	30	7.7
3	2a	38	2.4
4	2b	29	2.7
5a	HGII	52	7.4

^aRef. 49.