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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 2.

Aldehyde Scope

entry RCHO Conditions, yield Product
Thermal SnBr4 (10 mol %), rt
1 PhCHO 100 °C, 18 h, 77% 3 h, 37% 5
2 n-BuCHO 100 °C, 18 h, 72% 3 h, 37% 19
3 i-PrCHO 130 °C, 3 d, 73% 18 h, 40% 20
4 graphic file with name nihms259595t1.jpg 130 °C, 5 d, 72% 18 h, 94% 21
5 graphic file with name nihms259595t2.jpg 100 °C, 18 h, 80% decomposition 22

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