Table 5. Cross Metathesis of Amino Acids 3 and 5s.

			yielda (%)		Z selectivityb (%)
entry	equiv of 3	equiv of 5s	1	2	1	2
1	1	1	46	47	90	93
2	1	2	43	48	84	90
3	1	4	38	41	84	91
4	1	6	34	38	72	88
5	2	1	47	58	88	91
6	4	1	58	60	90	92
7	6	1	62	66	87	90

^aIsolated yields.

^bDetermined by ¹H or ¹³C NMR spectroscopy.