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. Author manuscript; available in PMC: 2012 Jun 17.
Published in final edited form as: J Am Chem Soc. 2010 Dec 17;133(3):406–408. doi: 10.1021/ja109631z

Table 1.

Dienoate Scope in Formation of trans-Dioxasilacyclononenes

entry Dienoate R1 R2 R3 Conditions Product Yield
1 1 H Me Me 100 °C, 18 h 5 77%
2 6 Me H Me 100 °C, 18 h 7 67%
3 11 H Me H 100 °C, 5 d 15 59%
4 12 H H Me 100 °C, 2 d 16 53%
5 13 Me Me H 100 °C, 10 d 17 38%
6 14 H H H 100 °C, 5 d 18 37%

Products were formed as one isomer as detected by 1H NMR spectroscopy and GCMS. Yields reported are isolated yields.