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. Author manuscript; available in PMC: 2015 Apr 7.
Published in final edited form as: Angew Chem Int Ed Engl. 2014 Feb 19;53(15):3885–3888. doi: 10.1002/anie.201310767

Table 1.

Optimization of the AROCM of Cyclobutene 2 with 3.

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entry Equiv 3 Conc (M) Solvent Yield[a] % Z[a] ee (Z)[b]
1 7 0.5 CH2Cl2 35 83 93
2 7 0.5 Benzene 49 84 95
3 7 0.5 Toluene 52 84 95
4 7 0.5 THF 79 85 95
5 5 0.5 THF 71 84 96
6 3 0.5 THF 63 85 96
7 1.2 0.5 THF 29 87 97
8 7 0.3 THF 72 85 95
9 7 0.1 THF 43 85 95
[a]

Determined by GC.

[b]

Determined by chiral SFC.