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. Author manuscript; available in PMC: 2022 Jun 18.
Published in final edited form as: Tetrahedron. 2021 May 11;90:132173. doi: 10.1016/j.tet.2021.132173

Table 10.

Optimization of solvents with alkene 4a.

graphic file with name nihms-1703004-t0015.jpg
Entry solvent Yield % (5a/5a”/4a)
1 MTBE 20/trace/65
2 DCE 38/10/24
3 CHCl3 35/3/36
4 THF 19/11/52
5 1,4-dioxane 25/5/57
6 toluene 11/4/52
7 DMF 0/20/0
8 DCE/MTBE(10:1) 43/8/20
9 DCE/MTBE(5:1) 44/7/23
10 DCE/MTBE(2:1) 43/6/26