The side-chain carboxyl groups of aspartic acid and glutamic acid are often protected as benzyl esters. Me,COČNHCHČOCH3 ВОС as amino- protecting group CH, CH, benzyl ester as carboxyl- protecting group C=0 ÓCH,Ph

Explain below ? What happens when bromine of the alpha carbon of a carboxylic acid is treated with a weak or strong base?

For   compound, indicate which group on the ring is more strongly activating and then draw a structural formula of the major product formed by nitration of the compound.

why a CH3 group directs electrophilic aromatic substitution to theortho and para positions ?

A student accidentally uses one tenth of the correct amount of methyl benzoate (0.03 g) and the full amount of sulfuric acid and nitric acid. What do you expect the polynitrated product to be, considering the choices available?     methyl 2,5-dinitrobenzoate     methyl 3,5-dinitrobenzoate     methyl 2,3-dinitrobenzoate     methyl 3,4-dinitrobenzoate

explain why sulfonate esters are such good leaving groups, in terms of structure and bonding

4) Structure: the appropriate box. CHO -OH H- HO- -H HO -H Write the requested cyclized form of the given carbohydrates in B-pyranose a-furanose CH₂OH

What changes would be made to separate the two isomeric pinene (α and β), bp 156 oC and 167 oC respectively that are the major constituents of commercial turpentine?

The conjugate base of diethyl malonate can serve as a nucleophile to attack a wide range of electrophiles. Identify the product that is formed when the conjugate base of diethyl malonate reacts with the following electrophile followed by acid workup when relevant: Modify the provided structures of diethyl malonate and the given electrophile to draw the product formed. Note: the eraser tool can be used to erase bonds, and atoms can be moved by selecting them with the selector tool and then dragging the selected atom(s) to a new position. If you make a mistake, you can use Ctrl-Z or the Undo tool. бль EtO OEt Edit Drawing

Draw the structure of two esters that will be reduced to propanol and butanol by LiAlH4 (followed by addition of aqueous acid).