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. Author manuscript; available in PMC: 2011 Oct 15.
Published in final edited form as: Org Lett. 2010 Oct 15;12(20):4624–4627. doi: 10.1021/ol1019629

Table 3.

Additions of Achiral Allenylsilanes to Dihydrofuran 7

graphic file with name nihms236689u4.jpg
Allene R Yielda drb product
4a Me 93 >20:1 9a
4b Et 88 >20:1 9b
4c Ph 45 >20:1 9c
4d CH2CO2Me 54 >20:1 9d
a

Isolated yield after chromatographic purification.

b

Diastereomeric ratios determined by 1H NMR analysis of crude material.