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. Author manuscript; available in PMC: 2018 Apr 10.
Published in final edited form as: Organometallics. 2017 Mar 29;36(7):1383–1390. doi: 10.1021/acs.organomet.7b00096

Table 2.

3-Hexyne Trimerization Dataa

graphic file with name nihms868681u3.jpg
[Ti] % trimer yield % [Ti] act.b % conversion TONc
1 62 ± 13 80 ± 12 73 ± 17 4 ± 2
2 55 ± 21 57 ± 12 77 ± 12 5 ± 2
3d 83 ± 6   17 ± 7   81 ± 3   35 ± 14
4 24 ± 8   33 ± 18 54 ± 16 5 ± 3
5 6 ± 5 42 ± 6   15 ± 0   1 ± 1
6 38 ± 2   48 ± 11 72 ± 18 5 ± 1
7 3 ± 3 70 ± 9   49 ± 11 0 ± 0
8 68 ± 7   74 ± 14 87 ± 2   6 ± 1
9 1 ± 0 8 ± 2 12 ± 0   1 ± 0
10 0 ± 0 1 ± 0 7 ± 2 0 ± 0
11 3 ± 0 41 ± 7   49 ± 8   1 ± 0
12 0 ± 0 7 ± 4 42 ± 13 0 ± 0
13 0 ± 0 0 ± 0 42 ± 11
14 2 ± 2 6 ± 4 20 ± 15 2 ± 2
15 1 ± 0 25 ± 1   22 ± 6   0 ± 0
16 1 ± 0 0 ± 0 35 ± 4  
a

Conditions: 5 mol % [Ti], 0.4 M 3-hexyne, C6D5Br, 16 h, 115 °C, average of 2–4 runs. Quantitation determined by in situ 1H NMR.

b

% Ti activated = (yield of G)/[Ti]tot.

c

TON = (yield of F)/Ti activated.

d

Room temperature.