aldol condensation sentence in Hindi

Examples

1. 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 " '.
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 ).
3. 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.
4. 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.
5. 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 " '.
6. 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.