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. Author manuscript; available in PMC: 2011 Dec 22.
Published in final edited form as: J Am Chem Soc. 2010 Nov 29;132(50):17933–17944. doi: 10.1021/ja1086485

Table 2.

Formal cycloaddition reactions of 4,5-indolyne 29

entry trapping agent products yield (ratio)
1a N3–Bn graphic file with name nihms255340t10.jpg 86% yield (2.4:1)
2b graphic file with name nihms255340t11.jpg graphic file with name nihms255340t12.jpg 86% yield (5.5:1)
3c graphic file with name nihms255340t13.jpg graphic file with name nihms255340t14.jpg 68% yield (2:1)
a

Conditions: 27, TBAF, CH3CN, 23 °C.

b

Conditions: 27, CsF, CH3CN, 23 °C.

c

Conditions: 27, CsF, CH3CN, 80 °C.