. 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 3.

Diels–Alder reactions of 4,5-indolyne 29

entry	product	yield
1^a	45	83% yield
2^a	46	65% yield
3^b	47	85% yield
4^c	48	72% yield

Conditions: 27, TBAF, CH₃CN, 23 °C.

Conditions: 27, CsF, CH₃CN, 100 °C.

Conditions: 27, CsF, CH₃CN, 80 °C.