Synthesis and crystal structure of an ammonium salt of 4-hydroxy-3-[(2-oxo-2H-chromen-3-yl)-(3,4,5-trimethoxyphenyl)-methyl]chromen-2-one

被引：0
|
作者：
Dochev, S. [1 ]
Penkova, A. [2 ,3 ]
Retailleau, P. [4 ]
Manolov, I. [5 ]
机构：
[1] Vienna Univ Technol, Fac Tech Chem, Inst Appl Synthet Chem, Res Grp Mihovilov,Res Div Organ Chem, A-1060 Vienna, Austria
[2] Univ So Calif, Los Angeles, CA 90089 USA
[3] Bulgarian Acad Sci, Rostislaw Kaischew Inst Phys Chem, BU-1113 Sofia, Bulgaria
[4] CNRS, UPR2301, Inst Chim Subst Nat, Serv Cristallochim, F-91198 Gif Sur Yvette, France
[5] Med Univ, Fac Pharm, Dept Pharmaceut Chem, Sofia 1000, Bulgaria
来源：
BULGARIAN CHEMICAL COMMUNICATIONS | 2013年 / 45卷 / 03期
关键词：
4-Hydroxy-3-[(2-oxo-2H-chromen-3-y1)-(3,4,5-trimethoxyphenyl)-methyl] chromen-2-one; crystal structure; coumarin derivatives; Knoevenagel reaction; Hantzsch reaction and Pechmann condensation; COUMARIN; DATABASE;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The structure of ammonium salt of 4-hydroxy-3-[(2-oxo-2H-chromen-3-yl)-(3,4,5-trimethoxyphenyl)-methyl]-chromen-2-one was determined by X-ray crystallography. The compound crystallizes as a colourless prism in the monoclinic crystal system, space group P2(1/c) (#14) with cell constants: a = 16.3834(3) angstrom, b=10.7529(2)angstrom, c=14.7635(3) angstrom, beta=108.287(1)degrees,alpha=gamma=90 V=2469.52(8) angstrom(3), Z=4. The crystal structure was solved by direct methods and refined by full-matrix least-square on F-2 to a final R1 of 0.00467. The 4-hydroxycoumarins are intra molecularly hydrogen bonded between hydroxyls and carbonyls.The salt and the acid form of the title compound have slight differences between the bond lengths and the bond angles.
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收藏
页码：301 / 309
页数：9
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