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.

引用

页码：301 / 309

页数：9

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