Table 2.

Kinetic Resolutions with the Co^III-4a-OAc Catalyst

Epoxide	Loading (mol%)	Cond.[c]	Isolated epoxide (% yield, % ee, E-value)	Isolated diol (% yield, % ee, E-value)
	1	A	70, 33 S, 11	26, 72 R,[c] 8
	1	A	44, 92 S, 20	56, 72 R,e19
	4	B	59, 55 (S), 16	39, 80 (R),[d] 15
	2	B	59, 53 (S), 13	37, 75 (R),[d] 11
	2	B	45, 93 R,[e] 25	55, 72 S,[e],[f] 17
	1	B	82, 17 S, 9	18, 80 R,[f] 11
	10	B	62, 28 R,[g] 3.5	37, 46 S,[e] 3.5

^[a],[b]as for Table 1;

^[c]Assigned by comparison of optical rot'n with that of the known R-diol (ref 25);

^[d]-[f]– see notes

^[c]-[e], Table 1;

^[g]The sign of the optical rotation was found to differ with that reported [the S-epoxide is said to levorotatory (ref 24) but the R-epoxide was found to be levorotatory here]. To confirm the absolute stereochemistry, the R-epoxide was independently from S-glycidol.

^[h]note

^[g], Table 1.