【摘 要】
：
The title compound 2-ethoxy-spiro[2H-1,4,2-benzoxazaphosphorine-3(4H),1'-cyc- loheptane] 2-oxide (C15H22NO3P) was synthesized by the Mannich-type reaction of o-
【机 构】
：
Institute and State Key Laboratory of Elemento-organic Chemistry
论文部分内容阅读
The title compound 2-ethoxy-spiro[2H-1,4,2-benzoxazaphosphorine-3(4H),1'-cyc- loheptane] 2-oxide (C15H22NO3P) was synthesized by the Mannich-type reaction of o-amino-phenol with ethyl dichlorophosphinite and cycloheptanone, and structurally characterized by single-crystal X-ray diffraction analysis. It crystallizes in orthorhombic, space group P212121 with a = 8.9840(12), b = 9.2978(12), c = 37.205(5)(A), V = 3107.8(7)(A)3, Z = 8, Mr = 295.31, Dc = 1.262 g/cm3, F(000) = 1264, μ = 0.184 mm-1, S = 1.026, the final R = 0.0502 and wR = 0.1017 for 3849 observed reflections with I > 2σ(I) and 378 variable parameters. The structure exhibits that the six-membered phosphorus heterocycle is in the envelope conformation.
其他文献
In this work, by means of a new more general ansatz and the symbolic computation system Maple, we extend the Riccati equation rational expansion method [Chaos,
The crystal structure of the title compound (C15H17N7, Mr = 295.36) has been determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, s
Taking the Konopelchenko-Dubrovsky system as a simple example, some families of rational formal hyperbolic function solutions, rational formal triangular period
Reactions of 1,3-bis(pyridyl-4-ylthio)propan-2-one L and CoCl2·6H2O under dif- ferent conditions gave two new cobalt(II)-chloride-L complexes with distinct str
Simultaneous thermogravimetry-differential thermal analysis (TG-DTA) was used to study the kinetics and the degradation of magnesium salicylate(C14H10MgO6) in a
By integrating the concept of cooperative approach, an extension of the fast annealing coevolutionary algorithm is presented in this paper. It outperformed the
A modified Stober method has been developed which permits the controlled growth of spherical hollow spheres with diameters between 197 and 208 nanometers by con
从成核率的实验数据出发,对饱和蒸汽压力进行计算拟合并应用于经典成核理论.在计算过程中,采用了最新发展的成核率模型,其中考虑了真实气体效应和核子曲率对表面张力的影响.
A brief introduction to the characteristic set method is given for solving algebraic equation systems and then the method is extended to algebraic difference sy
The title compound 2-(4′-methylphenoxy)-5,8,9-trimethyl-3-phenyl thieno[3′,2′:5,6]pyrido[4,3-d]pyrimidin-4(3H)-one hydrochloride (C26H23Cl4N3O2S, Mr = 583.33