Pfeiffer, Bernhard; Speck-Gisler, Sandra; Barandun, Luzi; Senft, Ursula; De Groot, Claire; Lehmann, Irene; Ganci, Walter; Gertsch, Juerg; Altmann, Karl-Heinz Journal of Organic Chemistry, 2013, vol. 78, # 6 p. 2553 - 2563 doi: 10.1021/jo3027643