e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
The Journal of organic chemistry
Preparation and Intramolecular [2+ 2]-Photocycloaddition of 1, 5-Dihydropyrrol-2-ones and 5, 6-Dihydro-1 H-pyridin-2-ones with C-, N-, and O-linked Alkenyl Side …
D Albrecht, B Basler, T Bach
Index: James, Gwyn D.; Mills, Stuart D.; Pattenden, Gerald Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1993 , # 21 p. 2581 - 2584