aldol condensation वाक्य
उदाहरण वाक्य
मोबाइल
- According to a mechanism proposed by Sweet in 1973 the aldol condensation of ethylacetoacetate "'1 "'and the aryl aldehyde is the rate-limiting step leading to the carbenium ion "'2 " '.
- Because of its extremely weak Lewis basicity, the cation of P 4-" t "-Bu suppresses typical side reactions of metal organyls ( such as aldol condensations ) as can be caused by lithium amides such as lithium diisopropylamide ( LDA ).
- It is produced by base-catalyzed aldol condensation of 2-butanone with acetaldehyde, forming 4-hydroxy-3-methyl-2-pentanone, which is 3-methyl-3-penten-2-one over an acid catalyst, followed by hydrogenation over a palladium catalyst.
- A Beckmann rearrangement ( methanol, sodium polystyrene sulfonate 2 hrs, 170 �C ) took place next to lactam "'32 "'( not isolated ) which reacted further to the tetracycle "'33 "'called "'alpha-corrnorsterone "'in an amine-carbonyl condensation-aldol condensation cascade.
- Both the cyclopentene ring and the cyclohexenone ring were oxidized next in an ozonolysis ( ozone ) forming triketone "'29 "', an aldol condensation of the 1, 5-dicarbonyl unit ( pyrrolidine acetate ) formed cyclohexene "'30 "'with tosylation of the oxime group, a second oxidation with periodic acid cleaves the cyclohexene ring and diazomethane esterifies the resulting carboxylic acid group in "'31 " '.
- Citrate synthase has three key amino acids in its active site ( known as the catalytic triad ) which catalyze the conversion of acetyl-CoA [ H 3 CC ( = O ) " SCoA ] and oxaloacetate [ " O 2 CCH 2 C ( = O ) CO 2 " ] into citrate [ " O 2 CCH 2 C ( OH ) ( CO 2 " ) CH 2 CO 2 " ] and H " SCoA in an aldol condensation reaction.
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