Reactions of PO (NCS) 3 with 4-Hydroxy-1, 3-dioxanes. Crystal Structure of rel-(2S, 4R, 5S, 6S)-2, 6-Diethyl-5-methyl-4-(N'-benzylthioureido)-1, 3-dioxane
…, G Birošová, M Buděšínský, J Podlaha…
文献索引：Bernat, Juraj; Kniezo, Ladislav; Birosova, Gabriela; Budesinsky, Milos; Podlaha, Jaroslav; et al. Collection of Czechoslovak Chemical Communications, 1992 , vol. 57, # 6 p. 1299 - 1313
Abstract Substituted 4-hydroxy-1, 3-dioxanes II react rapidly with PO (NCS) 3 to give 4- isothiocyanato-1, 3-dioxanes III. The 1 H NMR spectra showed that in the isothiocyanate IIIa the predominant stereoisomer has its NCS group in axial position. The addition of benzylamine to the isothiocyanates IIIa and IIIb gave uniform thioureas IVa and IVb with equatorial alkyl groups at 2 and 6 positions and axial thioureido group at 4 position. On ...
