Ethyl 4-(2-fur-yl)-2-oxochroman-3-carboxyl-ate.
Acta Crystallogr Sect E Struct Rep Online
; 66(Pt 6): o1310, 2010 May 12.
Article
em En
| MEDLINE
| ID: mdl-21579405
ABSTRACT
The title compound, C(16)H(14)O(5), was prepared from the reaction of 3-carbethoxy-coumarin with furan in the presence of AlCl(3) as catalyst. In the crystal, inter-molecular C-Hâ¯O hydrogen-bonding inter-actions between four mol-ecules lead to a tetra-mer in the unit cell. The furan ring is anti-periplanar [C-C-C-O = 167.9â
(13)°] and the ethoxy-carbonyl group is (-)anti-clinal [C-C-C-O = -128.6â
(14)°] to the lactone ring.
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MEDLINE
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En
Ano de publicação:
2010
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Article