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. Author manuscript; available in PMC: 2012 Mar 5.
Published in final edited form as: Aust J Chem. 2011 Aug 19;64(8):1158–1164. doi: 10.1071/ch11264

Table 1. Optimization table and ORTEP of 2 (displayed at 50% probability).

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Entry Azolium mol% Base Solventa Yield 2 (%)b,c
1 A 20 tBTMG CH2CL2 10
2 B 20 tBTMG CH2CL2 0
3 C 20 tBTMG CH2CL2 0
4 D 20 tBTMG CH2CL2 15
5 E 20 tBTMG CH2CL2 0
6 F 20 tBTMG CH2CL2 0
7 D 20 NaOtBu CH2CL2 39
8 D 20 DBU CH2CL2 trace
9 D 20 Et3N CH2CL2 0
10 D 20 K2CO3 CH2CL2 0
a

0.25 M.

b

isolated yields.

c

20 mol% azolium, 20 mol% base at 25°C for 25 h

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