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. Author manuscript; available in PMC: 2008 Aug 26.
Published in final edited form as: Chem Rev. 2007 May 27;107(6):2503–2545. doi: 10.1021/cr0509556

Table 17.

Results of the asymmetric HDA reaction catalyzed by (salen)Cr+ BF4 complexes.

(salen)Cr+
R1 = t-Bu
 (salen)Cr+
R1 = OMe
entry R temp
(°C)		 ee (%) yield (%) yield (%) ee (%)
1 Ph −30 87 85 98 65
2 c-C6H11 −20 93 71 76 85
3 n-C5H11 −40 83 86 85 62
4 2-furyl −10 76 89 80 68
5 (E)-CH=CHPh 0 70 65 96 73
6 CH2OCH2(4-C6H4-Br) −30 79 67 94a 84
7 CH2O2C(2-C6H4-Cl) −20 83a 92 86 72
a

Reactions were run on 10.0 mmol scale