A Novel Unusual Isocoumarin Derivative, 3H-Furo[3,4-c]isochromene-1,5-dione

被引：0
|
作者：
Hussain, Muhammad Tahir [2 ]
Rama, Nasim Hasan [1 ]
Khan, Khalid Mohammed [3 ]
机构：
[1] Quaid I Azam Univ, Dept Chem, Islamabad 45320, Pakistan
[2] Natl Textile Univ, Dept Appl Sci, Faisalabad 37610, Pakistan
[3] Univ Karachi, Int Ctr Chem & Biol Sci, H E J Res Inst Chem, Karachi 75270, Pakistan
来源：
LETTERS IN ORGANIC CHEMISTRY | 2010年 / 7卷 / 07期
关键词：
Acetyl chloride; Chloroacetyl chloride; Homophthalic acid; Novel 3H-furo[3,4-c]isochromene-1,5-dione; O-IODOBENZOIC ACID; ALPHA-PYRONES; CHEMISTRY; CONVERSION;
D O I：
暂无
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
An attempt to prepare 3-substituted isocoumarins by the condensation of acid chlorides with homophthalic acid to afford the desired 3-chloromethylisocoumarin was made but surprisingly the desired isocoumarin (8) was not formed. However, a novel 3H-furo[3,4-c]isochromene-1,5-dione (9) was isolated which was characterized by spectroscopy and X-ray crystallography. A mechanism for the formation of 3H-furo[3,4-c] isochromene-1,5-dione (9) is also proposed.
引用
收藏
页码：557 / 560
页数：4
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