Table 4.

Formation of the (+) and (−) enantiomers by molybdenum-catalyzed ARCM reactions.^a

Entry	Substrate	Chiral Mo Complexb	Product	Yield [%]c	ee [%]d
1	13	4 a	(−)-19	78	96
2	13	3 b	(+)-19	75	93
3	24	4 a	(−)-27	45	98
4	24	3 b	(+)-27	79	91
5	13	1 a	(−)-19e	65	82
6	13	2	(+)-19e	40	93
7	24	1 a	(+)-27f	61	96
8	24	2	(−)-27f	48	73

^aAll reactions performed under a nitrogen atmosphere.

^bAll reactions carried out with 10 mol% of catalyst.

^cYield of purified product.

^dDetermined by GLC analysis.

^eAbsolute configuration assigned by analogy to 27.

^fAbsolute configuration determined by X-ray analysis of the epoxide derivative 28, see Ref. [18].