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. Author manuscript; available in PMC: 2020 Sep 17.
Published in final edited form as: J Am Chem Soc. 2019 Mar 25;141(14):5669–5674. doi: 10.1021/jacs.9b02552

Table 1.

Optimization of α,β-Dehydrogenation

graphic file with name nihms-1590693-t0003.jpg
Entry Base Catalyst Yield (%)a
1 Zn(TMP)2 [Pd(allyl)Cl]2 8
2 Zn(TMP)2 MnBr2 0
3 Zn(TMP)2 FeBr2 0
4 Zn(TMP)2 CoBr2 0
5 Zn(TMP)2 CuBr2 0
6 Zn(TMP)2 NiBr2(dme) 7
7 Zn(TMP)2, ZnBr2 NiBr2(dme) 12
8 LiTMP, ZnBr2 NiBr2(dme) 61
9 LiCyan, ZnBr2 NiBr2(dme) 69
a

1H-NMR yield was determined using 1,3,5-trimethoxybenzene as an internal standard.