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. Author manuscript; available in PMC: 2018 Jul 23.
Published in final edited form as: J Org Chem. 2009 Jun 19;74(12):4508–4518. doi: 10.1021/jo900642f

Table 2. Synthesis of Substituted Tetrahydrofurans.

graphic file with name nihms-977331-t0011.jpg
entry R product % yield dra
1 −CH3 2a 70 11:1
2 −CH2CH3 2b 91 60:1
3 −CH2CN 2c 82 11:1
4 −CH2-C6H5 2d 91 49:1
5 −CH2-C6H5-pNO2 2e 70 14:1
6 −CH2CH2CHCH2 2f 86 100:1
7 −H 2g 55 1:1
a

The dr was determined by 1H NMR of the crude reaction mixture.