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. Author manuscript; available in PMC: 2011 Apr 12.
Published in final edited form as: Tetrahedron. 2009 Aug 22;65(34):3771–6803. doi: 10.1016/j.tet.2009.05.079

Table 3.9.

Ketene dimers generated by shuttle deprotonation.

graphic file with name nihms-194367-t0035.jpg

Entry R ee (%) Yield (%)
1 Me 94 72
2 Et 92 82
3 i-Pr 96 65
4 t-Bu 93 58
5 TIPS-OCH2 91 88
6 MeO2CCH2 92 64