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. Author manuscript; available in PMC: 2011 Dec 22.
Published in final edited form as: Tetrahedron Lett. 2010 Dec 22;51(51):6748–6752. doi: 10.1016/j.tetlet.2010.10.087

Table 4.

Toleration of vinylation reaction to changes in solvent molarity with benzyl 3,5-bis-(benzloxy)-4-bromobenzoate (1)

Entrya Time Molarity 1:3:4b Yield of 3c
18 30 min 0.027 M 7:15:1 n/a
19 30 min 0.091 M 0:1:trace 44
20 30 min 0.18 0:9:1 n/a
a

9 mol % PdCl2(dppf)CH2Cl2, THF:H2O (10:1) at 0.051 M, 5 equiv of 2, 3 equiv Cs2CO3, 150 °C for 30 min

b

Determined by 1H NMR integration of the crude mixture.

c

Isolated yield.