... Geminal systems, part 51. Previous communication see ref. 2. ... Page 2. Mendeleev Commun. 2004 209 ... O X N OR 1 O2CR 2 R2CO2M – MCl 13 X = NH2, R1 = Bu 14 X = NHMe, R1 = Pr 15 X = OEt, R1 = Me 16 X = OMe, R1 = Me 17 X = Ph, R1 = Et 1 X = NH2, R1 = Bu, R2 = Ph ...