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A p p e a r a n c e
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
T h i s i s a n o l d r e v i s i o n o f t h i s p a g e , a s e d i t e d b y C h e m - a w b ( t a l k | c o n t r i b s ) at 0 4 : 3 5 , 2 3 J a n u a r y 2 0 0 9 . T h e p r e s e n t a d d r e s s ( U R L ) i s a p e r m a n e n t l i n k t o t h i s r e v i s i o n , w h i c h m a y d i f f e r s i g n i f i c a n t l y f r o m t h e c u r r e n t r e v i s i o n .
( d i f f ) ← P r e v i o u s r e v i s i o n | L a t e s t r e v i s i o n ( d i f f ) | N e w e r r e v i s i o n → ( d i f f )
2-Pyrone (α-pyrone or pyran-2-one ) is an unsaturated cyclic chemical compound with the molecular formula C5 H 4 O 2 . It is isomeric with 4-pyrone .
2-Pyrone is used in organic synthesis as a building block for more complex chemical structures because it may participate in a variety of cycloaddition reactions to form bicyclic lactones . For example, it readily undergoes Diels-Alder reactions with alkynes producing, upon loss of carbon dioxide , substituted benzenes .[2] . The Gogte Synthesis (1938) is a method for the alkylation of certain pyrones with acid chlorides [citation needed ] .
2-Pyrone also forms the core structure of a variety of natural organic compounds. For example, the coumarins are an important class of compounds which are benzo-fused derivatives of 2-pyrone.
References
^ Woodard BT, Posner G H. "Recent Advances in Diels-Alder Cycloadditions Using 2-Pyrones." Advances in Cycloaddition . 1999, 5, 47-83.
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=2-Pyrone&oldid=265857638 "
C a t e g o r y :
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● A r t i c l e s w i t h o u t I n C h I s o u r c e
● C h e m i c a l p a g e s w i t h o u t C h e m S p i d e r I D
● A r t i c l e s w i t h o u t E B I s o u r c e
● A r t i c l e s w i t h o u t K E G G s o u r c e
● A r t i c l e s w i t h o u t U N I I s o u r c e
● E C H A I n f o C a r d I D f r o m W i k i d a t a
● A r t i c l e s c o n t a i n i n g u n v e r i f i e d c h e m i c a l i n f o b o x e s
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● A l l a r t i c l e s w i t h u n s o u r c e d s t a t e m e n t s
● A r t i c l e s w i t h u n s o u r c e d s t a t e m e n t s f r o m M a r c h 2 0 0 8
● T h i s p a g e w a s l a s t e d i t e d o n 2 3 J a n u a r y 2 0 0 9 , a t 0 4 : 3 5 ( U T C ) .
● T h i s v e r s i o n o f t h e p a g e h a s b e e n r e v i s e d . B e s i d e s n o r m a l e d i t i n g , t h e r e a s o n f o r r e v i s i o n m a y h a v e b e e n t h a t t h i s v e r s i o n c o n t a i n s f a c t u a l i n a c c u r a c i e s , v a n d a l i s m , o r m a t e r i a l n o t c o m p a t i b l e w i t h t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e .
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