. Author manuscript; available in PMC: 2018 Sep 18.

Published in final edited form as: Angew Chem Int Ed Engl. 2017 Aug 30;56(39):11891–11895. doi: 10.1002/anie.201706975

Table 1.

Screen of alkene coupling partners for [2+2] photocycloaddition.


	7	8	9	10	11
Yields:^a	0%	0%	0%	54%	70%

Yields determined by ¹H NMR analysis using phenanthrene as a calibrated internal standard.