Jallali-Naini, M.; Boussac, G.; Lemaitre, P.; Larcheveque, M.; Guillerm, D.; Lallemand, J-Y Tetrahedron Letters, 1981, vol. 22, # 31 p. 2995 - 2998 doi: 10.1016/S0040-4039(01)81809-8