Table 2. SM of 10 promoted by catalysts 1, 2 and HGII.

Entry	Catalyst	Isolated yield (%)	E/Z
1	1a	49	4.0
2	1b	70	3.3
3	2a	79	3.0
4	2b	67	3.8
5	HGII	—a	—a

^aInseparable mixture of products obtained.