The cyclizaion reactions of Lawesson's reagent(LR) with the substrates containing two functional groups such as hydroxy groups,amino groups, has been applied to prepare the O-P-O,N-P-N type 5-membered and 6-member...The cyclizaion reactions of Lawesson's reagent(LR) with the substrates containing two functional groups such as hydroxy groups,amino groups, has been applied to prepare the O-P-O,N-P-N type 5-membered and 6-membered phosphorus heterocycles.The heterocyclizaional possibility of LR with bifunctional compounds was also discussed.展开更多
The crystal structure of the title compound C16H17N2OPS2, has beendetermined by single-crystal X-ray diffraction at 299K. The crystal is monoclinic withspace group P21/n, a=9. 549(2), b= 7- 954(5), c=23. 039(8) A, β=...The crystal structure of the title compound C16H17N2OPS2, has beendetermined by single-crystal X-ray diffraction at 299K. The crystal is monoclinic withspace group P21/n, a=9. 549(2), b= 7- 954(5), c=23. 039(8) A, β= 96. 30(2)°,V= 1739(2) A 3, Z=4, Mr= 348. 3, F(000) = 728, μ(MoKa) =0. 386 mm-1, Dc=1. 331 g/cm3- The final R factor is 0. 044 and Rw is 0. 047 for 1002 observed reflections[I≥3δ(I)]. The five-membered heterocycle has a coplanar structure. The P - N (1)bond length(1. 636 A ) indicates the existence of the d-p π bond between P and N(1)atoms of the title compound.展开更多
文摘The cyclizaion reactions of Lawesson's reagent(LR) with the substrates containing two functional groups such as hydroxy groups,amino groups, has been applied to prepare the O-P-O,N-P-N type 5-membered and 6-membered phosphorus heterocycles.The heterocyclizaional possibility of LR with bifunctional compounds was also discussed.
文摘The crystal structure of the title compound C16H17N2OPS2, has beendetermined by single-crystal X-ray diffraction at 299K. The crystal is monoclinic withspace group P21/n, a=9. 549(2), b= 7- 954(5), c=23. 039(8) A, β= 96. 30(2)°,V= 1739(2) A 3, Z=4, Mr= 348. 3, F(000) = 728, μ(MoKa) =0. 386 mm-1, Dc=1. 331 g/cm3- The final R factor is 0. 044 and Rw is 0. 047 for 1002 observed reflections[I≥3δ(I)]. The five-membered heterocycle has a coplanar structure. The P - N (1)bond length(1. 636 A ) indicates the existence of the d-p π bond between P and N(1)atoms of the title compound.
